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If the three function `f(x),g(x)` and `h(x)` are such that `h(x)=f(x)g(x)` and `f'(a)g'(x)=c`, where c is a constant, then :
`(f''(x))/(f(x))+(g''(x))/(g(x))+(2c)/(f(x)f(x))` is equal to :

A

`(h(x))/( h(x)) `

B

`(h (x ))/( h(x ))`

C

`(h(x))/( h"(x))`

D

`h'(x ) .h"(x )`

Text Solution

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The correct Answer is:
B
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