Find the number of solution of equation (where sgn represent signum function) `(i) sgn (x)=|x|` `(ii) sgn(x^(2)-1)=(x+1)^(2)`
Find the number of solution of equation (where sgn represent signum function)
`(i) sgn (x)=|x|` `(ii) sgn(x^(2)-1)=(x+1)^(2)`
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