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If f(x−y),f(x)f(y) and f(x+y) are in A.P. for all x,y∈R and f(0)≠0, then |
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Answer» If f(x−y),f(x)f(y) and f(x+y) are in A.P. for all x,y∈R and f(0)≠0, then |
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