The first one is, I presume, to solve
This equation is separable:
We know that s(1) = 3/2, so
Solve for C.
For the second one I presume you are trying to integrate?
Then your integral becomes
For the third I presume this is
(Please use parenthesis!)
This is, again, a separable equation:
Integrate both sides by using the substitution u = x - 2.
I presume the last one is an integration as well and is
(Again, please use parenthesis!)
Split this into two parts:
For the first integral let y = 3x and the second let u = -x.