find the derivative of the integral from 0 to x^4 (sec(t)dt)(adsbygoogle = window.adsbygoogle || []).push({});

I get sec(x^4)(4x^3)

I understand the procedure for solving this integral. However, I don't understand why exactly we need to use the chain rule in this situation.

Why isn't the answer just sec(x^4)?

Thank you!

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# Homework Help: Find the derivative of the integral from 0 to x^4 (sec(t)dt)

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