정답
There exists at least one $c \in (a, b)$ such that $f'(c) = \frac{f(b) - f(a)}{b - a}$.
해설
Geometrically, there is at least one point where the instantaneous tangent line is parallel to the secant line between the endpoints.
홈 / 라이브러리 / CSAT (Suneung) essentials: original practice / AI 플래시카드
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There exists at least one $c \in (a, b)$ such that $f'(c) = \frac{f(b) - f(a)}{b - a}$.
Geometrically, there is at least one point where the instantaneous tangent line is parallel to the secant line between the endpoints.