Evaluate the following integrals by the method of u-substitution. Must show all the steps in order to receive credit. a) (14 points) ?_0^1 x^4 (2 + x^5)^3 dx b) (14 points) ?_e^{e^4} dx / (x?(ln x))
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Let's set: $$u = 2 + 25x^8$$ Now, we need to find the derivative of $u$ with respect to $x$: $$\frac{du}{dx} = 0 + 200x^7$$ Now, we can solve for $dx$: $$dx = \frac{du}{200x^7}$$ Now, we can substitute $u$ and $dx$ into the integral: Show more…
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