- #1

Shambles

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## Homework Statement

## Homework Equations

## The Attempt at a Solution

## Homework Statement

## Homework Equations

u = 1+tant

du = sec^2(t) dt

dt = du / sec^2(t)

## The Attempt at a Solution

It seems like I should be using substitution in the equation, however the exponent is messing things up for me. I recall from derivatives how they interact with the chain rule, but am not sure how this would work backwards in integration. Something like,

I(u^3)(sec^2(t)) = (u^4/4)((sec^2(t)) (tan(t))

Except I haven't gotten rid of the t variable and now have t and u. Any points are welcome.