MathematicsMedium63×since 2002Q3660Let f(x)=x5+2ex/4f(x)=x^5+2 \mathrm{e}^{x / 4}f(x)=x5+2ex/4 for all x∈Rx \in \mathbf{R}x∈R. Consider a function g(x)g(x)g(x) such that (g∘f)(x)=x(g \circ f)(x)=x(g∘f)(x)=x for all x∈Rx \in \mathbf{R}x∈R. Then the value of 8g′(2)8 g^{\prime}(2)8g′(2) is :A4B2C16D8Check answerSkip