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.
NSolve[{D[Sin[x]*Sin[y],x] == 0, D[Sin[x]*Sin[y],y] == 0},{x,y}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
