I could use some help with the following four calculus questions:

\f7 x3 -9 25 Find an antiderivative of in the variable a where > > 0. Remember to include a "+ C" if appropriate. Antiderivative =Find an antiderivative F (a ) with F (ac) = f (ac) = 7 + 20x3 + 15x4 and F (1) = 0. Remember to include a "+ C" if appropriate. F(x)Find the indefinite integral (for a > 0) on the domain of positive real numbers. Remember to include a "+ C" if appropriate. Enclose arguments of functions in parentheses. For example, sin (2ac ). To enter va, type sqrt(a). 13 da = P 8 /x