f:R→R f(x) = { ((x^2 +2mx−1 ; x≤0)),((mx−1 ; x>0)) :} if f(x) is one−one then m lies in interval (a) (−∞,0 ) (c) (0,∞) (b) (−∞, 0 ] (d) [ 0, ∞ )


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Question Number 122998 by benjo_mathlover last updated on 21/Nov/20
$f:R→R f(x) = { ((x^2 +2mx−1 ; x≤0)),((mx−1 ; x>0)) :} if f(x) is one−one then m lies in interval (a) (−∞,0 ) (c) (0,∞) (b) (−∞, 0 ] (d) [ 0, ∞ )$
$f : R \to R$ $f (x) = {\begin{cases} x^{2} + 2 m x - 1; x ⩽ 0 \\ m x - 1; x > 0 \end{cases}$ $i f f (x) i s o n e - o n e t h e n m l i e s$ $i n i n t e r v a l$ $(a) (- \infty, 0) (c) (0, \infty)$ $(b) (- \infty, 0] (d) [0, \infty)$
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