Find the derivative of 3x 4 5x 2 7x 9 July 8, 2019 16 32 64 128 31 find the derivative of 3x 4 )/( 5x 2 )- 7x 9 Find the derivative of frac 3x 4 5x 2 - 7x 9 Find derivative of exponential function How to find derivative of a number How to find derivative of a function