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1- For the function y = xvx2 + 16 the equation of the tangent line at the point (3, 15) is given by: (a) 27 = 5y - 34x. (b) 5y - 15 = 34(x - 3). (c) y - 15 = 20-+16 Vx2+16 (2 - 3). (d) y - 15 = 12 Vx2+16 ( - 3). (e) None of the other alternatives is correct. 2- Which of the following can be integrated by using the substitution u = x2+1 dx 172+1 . II f x3 vx2 + 1dx III f x2 In(x2 + 1)dx. IV fex +idx. (a) I and IV only. (b) II only. (c) II and III only. (d) II and IV only. (e) None of the other alternatives is correct. 3- For y = In(x)2 + 1 the derivative y' is given by 2x (a) y' = In(2) 2+1 ( b) y' = 2 In(x) Vin(z)2+1 (c) y' = - 2 In(a xVin(2)2+1 (d) y' = Vin(x)2 + 1 . 2In(x)/x. (e) None of the other alternatives is correct