I just did the first part of two final high school year exams. And I came across this question that stumped me. It said:(adsbygoogle = window.adsbygoogle || []).push({});

* means multiplication

Let f:R --> R be a differentiable function. For all real values of x, the derivative of f(e^(2x)) with respect to x will be equal to:

A. 2e^(2x) * f '(x)

B. e^(2x) * f '(x)

C. 2e^(2x) * f '(e^(2x))

D. 2 * f '(e^(2x))

E. f '(e^(2x))

Having never come across these types of questions before, I selected E. Some of my friends selected C but none of us are really sure because it hasn't been in any of the past papers from 1994-2004. If it's not E, why can't it be E?

Thanks

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# F(e^(2x)), derivative = ?

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