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## Homework Statement

## Homework Equations

## The Attempt at a Solution

integral[du]= Integral[xt ds]

xt=18s

^{2}+3sT

so,

u=Integral[

**18s**

u=6s

C=e

^{2}+3sT]u=6s

^{3}+(3/2)s^{2}T+CC=e

^{T2}This is what I did and the solution is below. I'm unsure where the missing power on the (3/2)sT went in the u(s,t) equation.[/B]