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.
UPGRADE TO PRO
APPS
TOUR
Sign in
plot atan(x-2) + 1.3, 6(x-2)/(x^2-4 x+5)^2 for x = 0..4
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random