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If f(a)=2 f'(a)=1 g(a)=-1 g'(a)=2 the...

If `f(a)=2` ` f'(a)=1` ` g(a)=-1` `g'(a)=2` then `lim_(xtoa)(g(x)f(a)-g(a)f(x))/(x-a)` is

A

5

B

`(1)/(5)`

C

`-(1)/(5)`

D

`5`

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