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36. If f(X+1/y) + f(x-1/y)=2f(X)f(1/y) for all X,y belong to R-{0} and f(0)=1/2 then f(4) is |
| Answer» 36. If f(X+1/y) + f(x-1/y)=2f(X)f(1/y) for all X,y belong to R-{0} and f(0)=1/2 then f(4) is | |