# Answer to Question #27201 in Calculus for chrissi

Question #27201

Using the rules of differentiation, find the derivatives of

a) y= 3√x + 7/x

b) y= t cos(2t)

c) y= x / (x^2+1)

a) y= 3√x + 7/x

b) y= t cos(2t)

c) y= x / (x^2+1)

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