d(a^x)/dx
a^x ln a
integral of e^x dx
e^x + c
integral of e^kx dx
1/k e^kx + c
integral of 1/x dx
ln |x| + c
integral of 1/ax dx
1/a ln |ax| + c
integral of cos kx dx
1/k sin kx + c
integral of sin kx dx
-1/k cos kx + c
integral of sec^2 kx dx
1/k tan kx + c