Find the indicated derivative. 128 If f( x ) = Vy + 24 v x, find of dx 4 Step 1 Before we can find of we need to find the derivative. To take the derivative of a function involving dx = 4 roots, we first rewrite the roots as rational powers of x. Recall that i yb = xb/ a. 128 f(x) = x + 24 v x -1/2 4 1/2 128x 1/2 X + 24X Step 2 From the text, the derivative of the function g(x) = x", where n is any real number, is given by the Power Rule. dx