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.
y = 4 / 5 * [ - √ ( 1 - x^2 ) + √ x ] , y = 4 / 5 * [ √ ( 1 - x^2 ) + √ x ]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random