d/dx [ 5 sin(2x) ] = 10 cos (2x)
Chat with our AI personalities
sin2X = sin2X What is it about ' equation ' you do you not understand. Of course they are equal!
(1 - tan2x)/(1 + tan2x) = (1 - sin2x/cos2x)/(1 + sin2x/cos2x) = (cos2x - sin2x)/(cos2x + sin2x) = (cos2x - sin2x)/1 = (cos2x - sin2x) = cos(2x)
sin2x because sin2x + cos2x = 1
The "double prime", or second derivative of y = 5x, equals zero. The first derivative is 5, a constant. Since the derivative of any constant is zero, the derivative of 5 is zero.
5, if I'm not mistaken.