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16. sin(In x) = (A) sin(In a) (B) de cos(In a) © cos(In a) sin(In x) (E) none of (A) to (D)
Find the value for k for which the DE is an exanct equation: (kx^3 y^2- e^-x) dx +( 2x^4 y +1/y)dy = 0
A. 8 B. 4 C. 1/2 D. -2 E. none
25. If y(2) = x", then y'(x) = (A) x2–1 (B) 222-1 (C) xv7–! In x D x*(1 + Inx) (E) none of (A) to (D)