14. the general solutions of cos(3x-2y) is (a) 22- x cos(3x 2y)+3x +2y) (c) 22 x cos(3x 2y) +f3x- 2y) (b) 22 x sin(3x 2y)+3x +2y) (d) 22 x sin[3x 2y)+3x 2y)

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