1.

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

Answer»

Let f:R+{1,0,1} defined by f(x)=sgn(xx4+x7x81) where sgn denotes signum function. Then f(x) is




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