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.
plot {f(x)=0.5x²+2 ; n(x)=-0.5x+5 ; f(2); t(x)=2x} where -4<x<11 and -1<y<6
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random