Question

Use comparison test to determine whether the integral is convergent or divergent

a) ∫ from 1 to infinity (e^-x^4) dx


B) ∫ from 5 to infinity (3+sin^2x) / (x) dx



Step by step pleaseeeee. I been stuck with this. Thanks.

Answer 1

\[e^{-x^4}\le e^{-x}\]