Differentiate each of the following functions, using the power function rule. Continue to use the different notations.

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(a) y = 9x4 d (9x4)=36x (c) f(x)=7x-2 (d) y=-8x-3 (b) f(x)=-5x f' = -15x2 f'(x)=7(-2) x[-2-(1)] = -14x-3 == 14 == x3 dy = -8(-3)-3-(1)] 24 =24x -4 = dx x4 6 (e) y = - =6x-1 (f) f(x)=42x = 42x1/2 Dx (6x-1)=6(-1)x-2=-6x-2 df = 42 dx 12 = 21 1/2-11 21x-1/2 = =