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.
Solve y'' + 4y = 0 with y(0) = 1 ,
Solve y'' + 4y = 0 with y(0) = 1 ,
Natural Language
Math Input
Extended Keyboard
