Find the function with the given derivative whose graph passes through the point P.

1.) $\displaystyle f'(x)=sin(x)+cos(x), P(\pi,3)$

2.) $\displaystyle f'(x)=x^\frac{1}{3}+x^2+x+1, P(1,0)$

Can someone please explain what I have to do here. I'm pretty sure it involves anti-derivatives, but I've never done them before. If you could, could you explain step by step how to do them. Any help is appreciated, thanks.