Mary Layne Boas, Mathematical Methods in the Physical Sciences 3rd edition (Wiley, 2005)
Chapter 3. Linear Algebra 제3장. 선형대수학
Problems and Solutions 문제 및 해설
Section 2. Matrices; Row Reduction 제2절. 행렬
3.2.3. https://gall.dcinside.com/physicalscience/189543
3.2.4. https://gall.dcinside.com/physicalscience/189544
3.2.5. https://gall.dcinside.com/physicalscience/189545
3.2.6. https://gall.dcinside.com/physicalscience/189546
3.2.7. https://gall.dcinside.com/physicalscience/189555
3.2.8. https://gall.dcinside.com/physicalscience/189556
3.2.9. https://gall.dcinside.com/physicalscience/189557
3.2.10. https://gall.dcinside.com/physicalscience/189559
3.2.11. https://gall.dcinside.com/physicalscience/189560
3.2.12. https://gall.dcinside.com/physicalscience/189561
3.2.13. https://gall.dcinside.com/physicalscience/189563
3.2.14. https://gall.dcinside.com/physicalscience/189564
3.2.15. https://gall.dcinside.com/physicalscience/189565
3.2.16. https://gall.dcinside.com/physicalscience/189568
3.2.17. https://gall.dcinside.com/physicalscience/189569
3.2.18. https://gall.dcinside.com/physicalscience/189570
Section 3. Determinants; Cramer's Rule 제3절. 행렬식; 크레이머의 규칙
3.3.1. https://gall.dcinside.com/physicalscience/189571
3.3.2. https://gall.dcinside.com/physicalscience/189572
3.3.3. https://gall.dcinside.com/physicalscience/189574
3.3.4. https://gall.dcinside.com/physicalscience/189575
3.3.5. https://gall.dcinside.com/physicalscience/189576
3.3.6. https://gall.dcinside.com/physicalscience/189577
3.3.7. https://gall.dcinside.com/physicalscience/189581
3.3.8. https://gall.dcinside.com/physicalscience/189582
3.3.9. https://gall.dcinside.com/physicalscience/189583
3.3.10. https://gall.dcinside.com/physicalscience/189584
3.3.13. https://gall.dcinside.com/physicalscience/189585
3.3.14. https://gall.dcinside.com/physicalscience/189586
3.3.15. https://gall.dcinside.com/physicalscience/189587
3.3.16. https://gall.dcinside.com/physicalscience/189591
3.3.17. https://gall.dcinside.com/physicalscience/189592
3.3.18. https://gall.dcinside.com/physicalscience/189593
Section 4. Vectors 제4절. 벡터
3.4.2. https://gall.dcinside.com/physicalscience/189594
3.4.3. https://gall.dcinside.com/physicalscience/189596
3.4.4. https://gall.dcinside.com/physicalscience/189597
3.4.5. https://gall.dcinside.com/physicalscience/189598
3.4.6. https://gall.dcinside.com/physicalscience/189606
3.4.7. https://gall.dcinside.com/physicalscience/189607
3.4.8. https://gall.dcinside.com/physicalscience/189608
3.4.9. https://gall.dcinside.com/physicalscience/189609
3.4.10. https://gall.dcinside.com/physicalscience/189610
3.4.11. https://gall.dcinside.com/physicalscience/189611
3.4.12. https://gall.dcinside.com/physicalscience/189612
3.4.13. https://gall.dcinside.com/physicalscience/189613
3.4.14. https://gall.dcinside.com/physicalscience/189614
3.4.15. https://gall.dcinside.com/physicalscience/189615
3.4.16. https://gall.dcinside.com/physicalscience/189616
3.4.17. https://gall.dcinside.com/physicalscience/189617
3.4.18. https://gall.dcinside.com/physicalscience/189618
3.4.19. https://gall.dcinside.com/physicalscience/189619
3.4.20. https://gall.dcinside.com/physicalscience/189620
3.4.21. https://gall.dcinside.com/physicalscience/189621
3.4.22. https://gall.dcinside.com/physicalscience/189622
3.4.23. https://gall.dcinside.com/physicalscience/189623
3.4.24. https://gall.dcinside.com/physicalscience/189624
3.4.25. https://gall.dcinside.com/physicalscience/189625
3.4.26. https://gall.dcinside.com/physicalscience/189626
3.4.27. https://gall.dcinside.com/physicalscience/189637
3.4.28. https://gall.dcinside.com/physicalscience/189638
Section 5. Lines and Planes 제5절. 선 그리고 평면
3.5.1. https://gall.dcinside.com/physicalscience/189650
3.5.2. https://gall.dcinside.com/physicalscience/189651
3.5.3. https://gall.dcinside.com/physicalscience/189652
3.5.4. https://gall.dcinside.com/physicalscience/189653
3.5.5. https://gall.dcinside.com/physicalscience/189654
3.5.6. https://gall.dcinside.com/physicalscience/189655
3.5.7. https://gall.dcinside.com/physicalscience/189656
3.5.8. https://gall.dcinside.com/physicalscience/189657
3.5.9. https://gall.dcinside.com/physicalscience/189658
3.5.10. https://gall.dcinside.com/physicalscience/189659
3.5.11. https://gall.dcinside.com/physicalscience/189660
3.5.12. https://gall.dcinside.com/physicalscience/189661
3.5.13. https://gall.dcinside.com/physicalscience/189663
3.5.14. https://gall.dcinside.com/physicalscience/189664
3.5.15. https://gall.dcinside.com/physicalscience/189665
3.5.16. https://gall.dcinside.com/physicalscience/189666
3.5.17. https://gall.dcinside.com/physicalscience/189667
3.5.18. https://gall.dcinside.com/physicalscience/189668
3.5.19. https://gall.dcinside.com/physicalscience/189669
3.5.20. https://gall.dcinside.com/physicalscience/189670
3.5.21. https://gall.dcinside.com/physicalscience/189671
3.5.22. https://gall.dcinside.com/physicalscience/189672
3.5.23. https://gall.dcinside.com/physicalscience/189673
3.5.24. https://gall.dcinside.com/physicalscience/189674
3.5.25. https://gall.dcinside.com/physicalscience/189679
3.5.26. https://gall.dcinside.com/physicalscience/189680
3.5.27. https://gall.dcinside.com/physicalscience/189681
3.5.28. https://gall.dcinside.com/physicalscience/189691
3.5.29. https://gall.dcinside.com/physicalscience/189692
3.5.30. https://gall.dcinside.com/physicalscience/189693
3.5.31. https://gall.dcinside.com/physicalscience/189694
3.5.32. https://gall.dcinside.com/physicalscience/189695
3.5.33. https://gall.dcinside.com/physicalscience/189696
3.5.34. https://gall.dcinside.com/physicalscience/189697
3.5.35. https://gall.dcinside.com/physicalscience/189698
3.5.36. https://gall.dcinside.com/physicalscience/189699
3.5.37. https://gall.dcinside.com/physicalscience/189700
3.5.38. https://gall.dcinside.com/physicalscience/189700
3.5.39. https://gall.dcinside.com/physicalscience/189701
3.5.40. https://gall.dcinside.com/physicalscience/189702
3.5.41. https://gall.dcinside.com/physicalscience/189705
3.5.42. https://gall.dcinside.com/physicalscience/189706
3.5.43. https://gall.dcinside.com/physicalscience/189708
3.5.44. https://gall.dcinside.com/physicalscience/189709
3.5.45. https://gall.dcinside.com/physicalscience/189710
Section 6. Matrix Operations 제6절. 행렬 연산
3.6.6. https://gall.dcinside.com/physicalscience/189711
3.6.15. https://gall.dcinside.com/physicalscience/189712
3.6.22. https://gall.dcinside.com/physicalscience/189713
3.6.23. https://gall.dcinside.com/physicalscience/189714
3.6.24. https://gall.dcinside.com/physicalscience/189716
3.6.30. https://gall.dcinside.com/physicalscience/189717
3.6.31. https://gall.dcinside.com/physicalscience/189717
3.6.32. https://gall.dcinside.com/physicalscience/189717
Section 7. Linear Combinations, Linear Functions, Linear Operators 제7절. 일차결합, 일차함수, 선형연산자
3.7.1. https://gall.dcinside.com/physicalscience/189754
3.7.2. https://gall.dcinside.com/physicalscience/189755
3.7.3. https://gall.dcinside.com/physicalscience/189756
3.7.4. https://gall.dcinside.com/physicalscience/189767
3.7.5. https://gall.dcinside.com/physicalscience/189768
3.7.7. https://gall.dcinside.com/physicalscience/189769
3.7.8. https://gall.dcinside.com/physicalscience/189770
3.7.9. https://gall.dcinside.com/physicalscience/189771
3.7.10. https://gall.dcinside.com/physicalscience/189772
3.7.11. https://gall.dcinside.com/physicalscience/189773
3.7.12. https://gall.dcinside.com/physicalscience/189774
3.7.13. https://gall.dcinside.com/physicalscience/189775
3.7.14. https://gall.dcinside.com/physicalscience/189776
3.7.15. https://gall.dcinside.com/physicalscience/189786
3.7.16. https://gall.dcinside.com/physicalscience/189787
3.7.17. https://gall.dcinside.com/physicalscience/189788
3.7.19. https://gall.dcinside.com/physicalscience/189789
3.7.20. https://gall.dcinside.com/physicalscience/189790
3.7.21. https://gall.dcinside.com/physicalscience/189792
3.7.22. https://gall.dcinside.com/physicalscience/189793
3.7.23. https://gall.dcinside.com/physicalscience/189794
3.7.24. https://gall.dcinside.com/physicalscience/189795
3.7.25. https://gall.dcinside.com/physicalscience/189796
3.7.26. https://gall.dcinside.com/physicalscience/189797
3.7.27. https://gall.dcinside.com/physicalscience/189798
3.7.30. https://gall.dcinside.com/physicalscience/189799
3.7.31. https://gall.dcinside.com/physicalscience/189801
3.7.32. https://gall.dcinside.com/physicalscience/189802
3.7.33. https://gall.dcinside.com/physicalscience/189803
3.7.34. https://gall.dcinside.com/physicalscience/189804
3.7.35. https://gall.dcinside.com/physicalscience/189806
Section 8. Linear Dependence and Independence 제8절. 일차종속 및 일차독립
3.8.1. https://gall.dcinside.com/physicalscience/189809
3.8.2. https://gall.dcinside.com/physicalscience/189810
3.8.3. https://gall.dcinside.com/physicalscience/189812
3.8.4. https://gall.dcinside.com/physicalscience/189812
3.8.5. https://gall.dcinside.com/physicalscience/189813
3.8.6. https://gall.dcinside.com/physicalscience/189813
3.8.7. https://gall.dcinside.com/physicalscience/189813
3.8.8. https://gall.dcinside.com/physicalscience/189814
3.8.9. https://gall.dcinside.com/physicalscience/189815
3.8.10. https://gall.dcinside.com/physicalscience/189816
3.8.11. https://gall.dcinside.com/physicalscience/189817
3.8.12. https://gall.dcinside.com/physicalscience/189818
3.8.13. https://gall.dcinside.com/physicalscience/189819
3.8.14. https://gall.dcinside.com/physicalscience/189820
3.8.15. https://gall.dcinside.com/physicalscience/189821
3.8.16. https://gall.dcinside.com/physicalscience/189822
3.8.17. https://gall.dcinside.com/physicalscience/189823
3.8.18. https://gall.dcinside.com/physicalscience/189824
3.8.19. https://gall.dcinside.com/physicalscience/189825
3.8.20. https://gall.dcinside.com/physicalscience/189826
3.8.21. https://gall.dcinside.com/physicalscience/189828
3.8.22. https://gall.dcinside.com/physicalscience/189829
3.8.23. https://gall.dcinside.com/physicalscience/189830
3.8.24. https://gall.dcinside.com/physicalscience/189831
3.8.25. https://gall.dcinside.com/physicalscience/189832
3.8.26. https://gall.dcinside.com/physicalscience/189833
3.8.27. https://gall.dcinside.com/physicalscience/189834
3.8.28. https://gall.dcinside.com/physicalscience/189835
Section 9. Special Matrices and Formulas 제9절. 특수행렬 및 공식
3.9.1. https://gall.dcinside.com/physicalscience/189836
3.9.2. https://gall.dcinside.com/physicalscience/189837
3.9.3. https://gall.dcinside.com/physicalscience/189838
3.9.4. https://gall.dcinside.com/physicalscience/189840
3.9.5. https://gall.dcinside.com/physicalscience/189841
3.9.6. https://gall.dcinside.com/physicalscience/189842
3.9.8. https://gall.dcinside.com/physicalscience/189843
3.9.9. https://gall.dcinside.com/physicalscience/189844
3.9.10. https://gall.dcinside.com/physicalscience/189845
3.9.11. https://gall.dcinside.com/physicalscience/189846
3.9.12. https://gall.dcinside.com/physicalscience/189847
3.9.13. https://gall.dcinside.com/physicalscience/189849
3.9.14. https://gall.dcinside.com/physicalscience/189850
3.9.15. https://gall.dcinside.com/physicalscience/189853
3.9.17. https://gall.dcinside.com/physicalscience/189854
3.9.18. https://gall.dcinside.com/physicalscience/189855
3.9.19. https://gall.dcinside.com/physicalscience/189856
3.9.20. https://gall.dcinside.com/physicalscience/189857
3.9.21. https://gall.dcinside.com/physicalscience/189858
3.9.22. https://gall.dcinside.com/physicalscience/189859
3.9.23. https://gall.dcinside.com/physicalscience/189860
3.9.24. https://gall.dcinside.com/physicalscience/189862
3.9.25. https://gall.dcinside.com/physicalscience/189863
Section 10. Linear Vector Spaces 제10절. 선형벡터공간
3.10.1. https://gall.dcinside.com/physicalscience/189870
3.10.2. https://gall.dcinside.com/physicalscience/189872
3.10.3. https://gall.dcinside.com/physicalscience/189872
3.10.4. https://gall.dcinside.com/physicalscience/189874
3.10.5. https://gall.dcinside.com/physicalscience/189875
3.10.6. https://gall.dcinside.com/physicalscience/189881
3.10.9. https://gall.dcinside.com/physicalscience/189882
3.10.10. https://gall.dcinside.com/physicalscience/189883
Section 11. Eigenvalues and Eigenvectors; Diagonalizing Matrices 제11절. 고유값과 고유벡터; 행렬의 대각화
3.11.3. https://gall.dcinside.com/physicalscience/189931
3.11.4. https://gall.dcinside.com/physicalscience/189934
3.11.6. https://gall.dcinside.com/physicalscience/189935
3.11.7. https://gall.dcinside.com/physicalscience/189935
3.11.8. https://gall.dcinside.com/physicalscience/189936
3.11.9. https://gall.dcinside.com/physicalscience/189937
3.11.10. https://gall.dcinside.com/physicalscience/189938
3.11.11. https://gall.dcinside.com/physicalscience/189940
3.11.12. https://gall.dcinside.com/physicalscience/189941
3.11.13. https://gall.dcinside.com/physicalscience/189942
3.11.14. https://gall.dcinside.com/physicalscience/189943
3.11.15. https://gall.dcinside.com/physicalscience/189944
3.11.16. https://gall.dcinside.com/physicalscience/189945
3.11.17. https://gall.dcinside.com/physicalscience/189947
3.11.18. https://gall.dcinside.com/physicalscience/189948
3.11.19. https://gall.dcinside.com/physicalscience/189949
3.11.20. https://gall.dcinside.com/physicalscience/189950
3.11.21. https://gall.dcinside.com/physicalscience/189952
3.11.22. https://gall.dcinside.com/physicalscience/189954
3.11.23. https://gall.dcinside.com/physicalscience/189955
3.11.24. https://gall.dcinside.com/physicalscience/189960
3.11.25. https://gall.dcinside.com/physicalscience/189961
3.11.26. https://gall.dcinside.com/physicalscience/189962
3.11.27. https://gall.dcinside.com/physicalscience/189970
3.11.28. https://gall.dcinside.com/physicalscience/189971
3.11.29. https://gall.dcinside.com/physicalscience/189972
3.11.30. https://gall.dcinside.com/physicalscience/189973
3.11.31. https://gall.dcinside.com/physicalscience/189974
3.11.32. https://gall.dcinside.com/physicalscience/189975
3.11.33. https://gall.dcinside.com/physicalscience/189976
3.11.34. https://gall.dcinside.com/physicalscience/189977
3.11.35. https://gall.dcinside.com/physicalscience/189983
3.11.36. https://gall.dcinside.com/physicalscience/189984
3.11.37. https://gall.dcinside.com/physicalscience/189985
3.11.39. https://gall.dcinside.com/physicalscience/189986
3.11.41. https://gall.dcinside.com/physicalscience/189987
3.11.42. https://gall.dcinside.com/physicalscience/189988
3.11.43. https://gall.dcinside.com/physicalscience/189989
3.11.44. https://gall.dcinside.com/physicalscience/189990
3.11.45. https://gall.dcinside.com/physicalscience/189996
3.11.46. https://gall.dcinside.com/physicalscience/189997
3.11.47. https://gall.dcinside.com/physicalscience/189996
3.11.48. https://gall.dcinside.com/physicalscience/190005
3.11.49. https://gall.dcinside.com/physicalscience/190007
3.11.51. https://gall.dcinside.com/physicalscience/190008
3.11.52. https://gall.dcinside.com/physicalscience/190013
3.11.53. https://gall.dcinside.com/physicalscience/190014
3.11.54. https://gall.dcinside.com/physicalscience/190024
3.11.55. https://gall.dcinside.com/physicalscience/190025
3.11.56. https://gall.dcinside.com/physicalscience/190026
3.11.58. https://gall.dcinside.com/physicalscience/190027
3.11.59. https://gall.dcinside.com/physicalscience/190027
3.11.60. https://gall.dcinside.com/physicalscience/190028
3.11.61. https://gall.dcinside.com/physicalscience/190029
3.11.62. https://gall.dcinside.com/physicalscience/190030
Section 12. Applications of Diagonalization 제12절. 대각화의 응용
3.12.2. https://gall.dcinside.com/physicalscience/190031
3.12.3. https://gall.dcinside.com/physicalscience/190034
3.12.4. https://gall.dcinside.com/physicalscience/190035
3.12.5. https://gall.dcinside.com/physicalscience/190036
3.12.6. https://gall.dcinside.com/physicalscience/190037
3.12.7. https://gall.dcinside.com/physicalscience/190038
3.12.14. https://gall.dcinside.com/physicalscience/190044
3.12.15. https://gall.dcinside.com/physicalscience/190044
3.12.16. https://gall.dcinside.com/physicalscience/190044
3.12.17. https://gall.dcinside.com/physicalscience/190044
3.12.18. https://gall.dcinside.com/physicalscience/190044
3.12.19. https://gall.dcinside.com/physicalscience/190044
3.12.21. https://gall.dcinside.com/physicalscience/190045
3.12.22. https://gall.dcinside.com/physicalscience/190045
3.12.23. https://gall.dcinside.com/physicalscience/190045
Section 13. A Brief Introduction to Groups 제13절. 군의 간략한 소개
3.13.1. https://gall.dcinside.com/physicalscience/190046
3.13.4. https://gall.dcinside.com/physicalscience/190047
3.13.5. https://gall.dcinside.com/physicalscience/190048
3.13.6. https://gall.dcinside.com/physicalscience/190050
3.13.7. https://gall.dcinside.com/physicalscience/190051
3.13.10. https://gall.dcinside.com/physicalscience/190059
3.13.11. https://gall.dcinside.com/physicalscience/190059
3.13.12. https://gall.dcinside.com/physicalscience/190060
3.13.13. https://gall.dcinside.com/physicalscience/190064
3.13.14. https://gall.dcinside.com/physicalscience/190068
3.13.15. https://gall.dcinside.com/physicalscience/190070
3.13.16. https://gall.dcinside.com/physicalscience/190072
3.13.19. https://gall.dcinside.com/physicalscience/190073
3.13.20. https://gall.dcinside.com/physicalscience/190074
3.13.21. https://gall.dcinside.com/physicalscience/190075
Section 14. General Vector Spaces 제14절. 일반벡터공간
3.14.2. https://gall.dcinside.com/physicalscience/190076
3.14.3. https://gall.dcinside.com/physicalscience/190077
3.14.4. https://gall.dcinside.com/physicalscience/190078
3.14.5. https://gall.dcinside.com/physicalscience/190079
3.14.6. https://gall.dcinside.com/physicalscience/190080
3.14.7. https://gall.dcinside.com/physicalscience/190081
3.14.8. https://gall.dcinside.com/physicalscience/190082
3.14.9. https://gall.dcinside.com/physicalscience/190083
3.14.10. https://gall.dcinside.com/physicalscience/190084
3.14.11. https://gall.dcinside.com/physicalscience/190085
3.14.12. https://gall.dcinside.com/physicalscience/190085
3.14.13. https://gall.dcinside.com/physicalscience/190091
3.14.15. https://gall.dcinside.com/physicalscience/190092
Section 15. Miscellaneous Problems 제15절. 여러가지 문제
3.15.1. https://gall.dcinside.com/physicalscience/190093
3.15.2. https://gall.dcinside.com/physicalscience/190094
3.15.3. https://gall.dcinside.com/physicalscience/190095
3.15.4. https://gall.dcinside.com/physicalscience/190096
3.15.5. https://gall.dcinside.com/physicalscience/190099
3.15.6. https://gall.dcinside.com/physicalscience/190100
3.15.7. https://gall.dcinside.com/physicalscience/190101
3.15.8. https://gall.dcinside.com/physicalscience/190102
3.15.9. https://gall.dcinside.com/physicalscience/190103
3.15.10. https://gall.dcinside.com/physicalscience/190112
3.15.11. https://gall.dcinside.com/physicalscience/190113
3.15.12. https://gall.dcinside.com/physicalscience/190115
3.15.13. https://gall.dcinside.com/physicalscience/190116
3.15.14. https://gall.dcinside.com/physicalscience/190117
3.15.15. https://gall.dcinside.com/physicalscience/190118
3.15.16. https://gall.dcinside.com/physicalscience/190119
3.15.17. https://gall.dcinside.com/physicalscience/190120
3.15.18. https://gall.dcinside.com/physicalscience/190121
3.15.19. https://gall.dcinside.com/physicalscience/190122
3.15.20. https://gall.dcinside.com/physicalscience/190123
3.15.21. https://gall.dcinside.com/physicalscience/190124
3.15.22. https://gall.dcinside.com/physicalscience/190125
3.15.23. https://gall.dcinside.com/physicalscience/190126
3.15.24. https://gall.dcinside.com/physicalscience/190127
3.15.25. https://gall.dcinside.com/physicalscience/190121
3.15.26. https://gall.dcinside.com/physicalscience/190122
3.15.27. https://gall.dcinside.com/physicalscience/190128
3.15.28. https://gall.dcinside.com/physicalscience/190129
3.15.29. https://gall.dcinside.com/physicalscience/190130
3.15.30. https://gall.dcinside.com/physicalscience/190131
3.15.31. https://gall.dcinside.com/physicalscience/190133
3.15.32. https://gall.dcinside.com/physicalscience/190133
3.15.33. https://gall.dcinside.com/physicalscience/190134
3.15.34. https://gall.dcinside.com/physicalscience/190135
분산(표준편차)의 분모가 n-1인 이유를 자유도로 설명하는건 틀렸다는걸 발견한 썰 https://gall.dcinside.com/mathematics/408321
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분산구할때 제곱하는 이유를 발견한 썰(편차합이 0되기 때문인게 아님. 그건 잘못된 설명이고 다른 올바른 설명을 발견) https://gall.dcinside.com/mathematics/408212
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피타고라스 정리 배우기도 전에 발견한 썰 https://gall.dcinside.com/mathematics/408080
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배우기도 전에 미분, 테일러급수 발견한 썰 https://gall.dcinside.com/mathematics/409474
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초딩때 1+2+...+n 공식과 수학적귀납법을 발견해낸 썰 https://gall.dcinside.com/mathematics/409732
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모든건 DNA가 결정하는 이유 https://gall.dcinside.com/medicalscience/856495
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엡실론 델타 논법의 근본적 이해 https://gall.dcinside.com/mathematics/409368
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상대성이론 비슷한거 생각해낸적 있었던 썰 https://gall.dcinside.com/physicalscience/190058
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0.999...=1인 이유 https://gall.dcinside.com/mathematics/408032
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한의학이 비과학적이어도 상관없는 이유 https://gall.dcinside.com/oriental_medicine/297154
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분수를 왜 분모/분자가 아니라 분자/분모로 쓰는지 발견한 썰 https://gall.dcinside.com/mathematics/410028
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물 한방울+한방울=한방울 1+1=1이므로 수학은 틀렸다는 헛소리하는 사람 필독, 1+1=2를 증명해보라고 하는사람도 필독 https://gall.dcinside.com/mathematics/410183
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영어의 다의어는 실제론 다의어가 아니라 별 뜻이 없는게 아닌가 생각한 썰 https://gall.dcinside.com/English/443990
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영어강사가 틀리게 가르치는것들 모음집 https://gall.dcinside.com/English/444204
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국어 문법 배우기도 전에 발견한 썰 https://gall.dcinside.com/language/139943
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영어에 관사는 왜 존재하는지 나름대로의 추론(+영어발음의 어떠한 규칙성과 관련됨) https://gall.dcinside.com/English/444349
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절대음감은 타고난 재능이 아닌 이유 https://gall.dcinside.com/classic/418447
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인구감소를 막기 어려운 이유 https://gall.dcinside.com/stock_new2/8297527
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수시가 정시보다 학점높은 이유 https://gall.dcinside.com/medicalscience/874739
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