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.
Defina f(x)=0 if x é racional and f(x)=x^2 if x é irracional. Calcule limit as x\to0 of f(x)
Defina f(x)=0 if x é racional and f(x)=x^2 if x é irracional. Calcule limit as x\to0 of f(x)
Natural Language
Math Input
Extended Keyboard