Continuity and DifferentiabilityEasy

Question

If x = t + , y = t − , then equals -

Options

A.− 4t(t2 − 1)−2
B.− 4t3(t2 − 1)−3
C.(t2 + 1)(t2 − 1)−1
D.− 4t2(t2 − 1)−2

Solution

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