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Which of the following statements is inc...

Which of the following statements is incorrect a)xsgn x = |x| b)|x| sgn x = x c)x(sgn x) (sgn x) = x d)`|x| (sgn x)^3 = |x|`

A

xsgn x = |x|

B

|x| sgn x = x

C

x(sgn x) (sgn x) = x

D

`Ixl (sgn x)^3 = |x|`

Text Solution

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The correct Answer is:
D
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