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A function f:R→[1,∞) satisfies the equation f(xy)=f(x)f(y)−f(x)−f(y)+2. If f is differentiable on R−0 and f(2)=5,f′(x)=f(x)−1x.λ then λ =________

Answer»

A function f:R[1,) satisfies the equation f(xy)=f(x)f(y)f(x)f(y)+2. If f is differentiable on R0 and f(2)=5,f(x)=f(x)1x.λ then λ =________




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