Show that the function f : R → R defined by f(x) = x/x^2 +1,∀ x ∈ R is neither one-one nor onto. - Sarthaks eConnect | Largest Online Education Community
![Show that the Signum function f:R → R , given by f(x) = 1, if x > 0 0, if x = 0 - 1, if x < 0 is neither one - one nor onto. Show that the Signum function f:R → R , given by f(x) = 1, if x > 0 0, if x = 0 - 1, if x < 0 is neither one - one nor onto.](https://i.ytimg.com/vi/wlTf813Yc4I/maxresdefault.jpg)
Show that the Signum function f:R → R , given by f(x) = 1, if x > 0 0, if x = 0 - 1, if x < 0 is neither one - one nor onto.
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