B) Find the derivative of the foiiowing: 1) y = 2sin2(5x) ,2) y = x, 3) xsin-14y = y tan-14x 4) y = ecosh(8x) ,5) y = and x = V4t + 1 t2 + 1 x³cosx 6) y = Vtan?x, 7) y = In IV1 +x2

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