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.
int (1/(2.78x+0.8x^3)^0.5) dx, x=0..3
int (1/(2.78x+0.8x^3)^0.5) dx, x=0..3
Natural Language
Math Input
Extended Keyboard
