> Explain further what you mean it can't do sin(x)^2 or cos(x)^2 It does not know the transformation cos(x)^2 == 1/2 + 1/2 cos(2x) This is a fairly basic transformation, from somewhere around Y10, I think. Since it knows the Euler formula e^x = Re( x ) ( cos( Im(x) ) + i sin( Im(x) ) ) one would expect the much simpler cos(x)^2 to be there ... Regards, Zoltan