1.

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 :

Answer»

`(H(X))/( h(x)) `
`(h (x ))/( h(x ))`
`(h(x))/( h"(x))`
`h'(x ) .h"(x )`

ANSWER :B


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