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.
f(x) = sin x + (1)/(2)sin(2x) 在 [0, 2pi] 上的极值。
f(x) = sin x + (1)/(2)sin(2x) 在 [0, 2pi] 上的极值。
Natural Language
Math Input
Extended Keyboard