# Math Help - Calc 2

1. ## Calc 2

Suppose
Evaluate the following

i have no idea what to do here, any help and explanations would be very helpful.

2. It's just a substitution!

Put $u=\frac t6\implies du=\frac{dt}6$ and you'll get $0\le u\le6$ so your integral becomes $6\int_0^6g(u)\,du=6\times6=36.$