Let Use these values to evaluate the given definite integrals a S f x 9 x dx b S f x 9 2 dx c S 3 z 3f x 2g x dx f x 2 dz 6 2 dz 14 9 2 dx 3 9 2 dx 7 Find the value a such that a III if af 2 9 2 dx 0