Techniques of Integration 4. Show that evi dx = 2Vxevx - 2evx + C Hint: Make a substitution first before doing integration by parts. 5. Show that (12 + 1)e-* dx = -x2e-x- 2xe-x - 3e-*+ C Hint: You may need to compute or make reference to a different integral first. . Find the antiderivative of: xn+1 (n+ 1)2[(n+ 1)Inx - 1] ifn #-1 x? In x dx = 1 7 (In x) 2 + c if n = -1 Please write legibly