Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
Avalie numericamente limit as x\to2^- of (1-2x)/(x^2-4). (Resp: +infinity, limite lateral esquerdo)
Avalie numericamente limit as x\to2^- of (1-2x)/(x^2-4). (Resp: +infinity, limite lateral esquerdo)
Natural Language
Math Input
Extended Keyboard