Recent content by Pixardaki_Lamba

Here is what I have done : First of all I would like to remind you that cos(s)cos(t) = [cos(s+t) + cos(s-t)]/2 ∫cos(8x)+cos(4x) / 2 dx = 1/2 ∫cos(8x)+cos(4x) = sin(8x)/16 + sin(4x)/8 + C Best Regards