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이거 극대 e 극소 a,b

최대 e 최소 없음

이거 아닌가요? 

viewimage.php?id=20bcc42e&no=24b0d769e1d32ca73ded8efa11d02831ee99512b64ee64d67099c224c5014eb7aa1c5b2be99c048713ef70646fa91fed52d61b1c843952d149d193085ffde5e47e527aa0bd4771b01abd8aeba22d2081413205b9d7ed2597144a7c8456d274ca8059668d

이거 3번문제입니다 ..

- dc official App