(D) π (1 + sin^2 x)^2 dx26.If y = , find at x = 1.
(A)−52
(B)−28
(C) 13
(D) 52
27.∫ x dx =
(A) −
(B)
(C)
(D)
28.If = and y = 2 when x =1, then, when x = 2, y =
(A)
(B)
(C)
(D)
29.The graph of y = 5x^4 − x^5 has an inflection point (or points) at