DifferentiationHard

Question

Let y = x3 - 8x + 7 and x = f(t). If = 2 and x = 3 at t = 0, then at t = 0 is given by

Options

A.1
B.19/2
C.2/19
D.none of these

Solution

y = x3 - 8x + 7 and x = f(t)
= 2 & x = 3 at t = 0
∵     ⇒  
⇒ 
∵  at t = 0, x = 3
∴  (at t = 0) =

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