1.

If f(x)+f(y)=f(x+y1−xy)∀ x,y∈R (xy≠1) and limx→0f(x)x=2, then the value of f′(1) is equal to

Answer» If f(x)+f(y)=f(x+y1xy) x,yR (xy1) and limx0f(x)x=2, then the value of f(1) is equal to


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