Determine if the functions are injective – math.stackexchange.com 12:15 Posted by Unknown No Comments $$f(x) = \frac{x}{1+x^2}$$ $$g(x) = \frac{x^2}{1+x^2}$$ My answer: $f(x) = f(y)$ $$\implies \frac{x}{1+x^2} = \frac{y}{1+y^2}$$ $$\implies x+xy^2 =y+yx^2$$ $$\implies x=y$$ Hence $f(x)$ is ... from Hot Questions - Stack Exchange OnStackOverflow via Blogspot Share this Google Facebook Twitter More Digg Linkedin Stumbleupon Delicious Tumblr BufferApp Pocket Evernote Unknown Artikel TerkaitHandling someone else's problem that has been dumped on my desk – workplace.stackexchange.comHow to approach flatmate (and relative) to stop talking about a topic that makes me uncomfortable – interpersonal.stackexchange.comWhy can't wizards wear armour? – worldbuilding.stackexchange.comIs it always a crit when you're hit by a trap while unconscious? – rpg.stackexchange.comWhy does changing the type lead to different usage of members? – stackoverflow.comHow does the display on a spitfire work? – aviation.stackexchange.com
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