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Solution


Q.

Let f(x) be a differentiable function at x=a, f1(a)=4, f(a)=2.Then limx→axf(a)-af(x)x-a is equal to
1 2a–4   
2 2–4a   
3 4a–2  
4 4–2a   

Ans.

(2)

L. H rule