the derivative of 3x is 3 the derivative of x cubed is 3 times x squared
4
2
21 X squared over 5
( 6x2 / y ) × ( y3 / 12x4) = 6x2y3 / 12x4y = y2 / 2x2
-6
1
5
6
1
4x cubed y cubed z divided by x negative squared y negative 1 z sqaured = 4
X2 (X squared)