17.5 9.5 9.5 ์น˜์™€์™€์ž„

์ง€๊ธˆ ์“ฐ๋Š” ๊ฑด s2-c ์ธ๋ฐ fk2์“ฐ๋‹ค๊ฐ€ ๋นต๋Œ•์ด ์ฑ„์›Œ์ฃผ๋Š” ๊ฑฐ ๊ถ๊ธˆํ•ด์„œ s2์ƒ€๋Š”๋ฐ ๊ดœ์ฐฎ์€ ๊ฑฐ ๊ฐ™์•„์„œ za๋„ ๋„ˆ๋ฌด ๊ถ๊ธˆํ•œ๋ฐ ๊ดœ์ฐฎ์Œ? za13-c?