[질문] sin제곱x를2번미분한값은?

sin^2(x)를 2번 미분한 값은 -4sin^2(x) + 4cos^2(x)입니다.

참고 URL: 'https://ko.khanacademy.org/math/differential-calculus/dc-chain/dc-diff-with-multiple-rules/v/chain-rule-with-triple-composition'