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7. If y = (sin .)22 then y' = (A) 2.c(sin r)23-1 (B) (cos x)24 (C) (sin x)2-(2 In(sin x) + 2x cotx) (D) (sin x)24 (2 ln(sin x) - (E) none of the above
r9 23. If f(2)= -6, f' is continuous and f'(2) dx = 17, then f(9) = (A) 11 (B) 23 (C) 77 (D) 45 (E) none of (A) to (D)