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Let f:R+→{−1,0,1} defined by f(x)=sgn(x−x4+x7−x8−1) where sgn denotes signum function. Then f(x) is |
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Answer» Let f:R+→{−1,0,1} defined by f(x)=sgn(x−x4+x7−x8−1) where sgn denotes signum function. Then f(x) is |
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