Geef de standaard primitieven

f(x)= x^a                                            F(x)= 1/(a+1) x^a+1

f(x)=1/x                                              F(x)= ln(x)

f(x)= e^x                                           F(x)= e^x

f(x)= a^x                                           F(x)=a^x/ln(a)

f(x)=sin(x)                                         F(x)=-cos(x)

f(x)=cos(x)                                         F(x)= sin(x)

f(x)= tan(x)                                        F(x)= -ln(cos(x))

f(x)= 1/cos^2(x)                                F(x)= tan(x)

f(x)= 1/wortel(x^2+a^2)                  F(x)= ln(x+wortel(x^2+a^2)