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f(x)=sgn(x), g(x)=x(x2−1) and ϕ(x)=(x2−1)sinx, then which of the following is/are periodic function |
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Answer» f(x)=sgn(x), g(x)=x(x2−1) and ϕ(x)=(x2−1)sinx, then which of the following is/are periodic function |
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