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A cure is represented parametrically by ...

A cure is represented parametrically by the equation `x=f(t)=a^(In(b^t)) and y=g(t)=b^(-In(a^t))a,b gt0 and a = ne 1, b ne 1 ` where ` t in R`
The value of `(f(t))/(f'(t)).(f''(-t))/(f'(-t))+(f(-t))/(f'(t)).(f''(t))/(f''(t))AAtinR` is equal to

A

`-2`

B

2

C

`-4`

D

4

Text Solution

Verified by Experts

The correct Answer is:
A
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