a. Expand (x 3/2 1)( x 1/2 + 1). b. A curve has equation y =

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a. Expand (x3/2 − 1)( x−1/2 + 1).

b. A curve has equation y = (x3/2 − 1)(x−1/2 + 1), x > 0. Find dy/dx.

c. Use your answer to part b to calculate the gradient of the curve at the point where x = 4.

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