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.
i
n
t
x
3
*
c
o
s
x
2
+
1
2
*
4
-
x
2
1
2
d
x
f
r
o
m
-
2
t
o
2
Math Input
Natural Language
Math Input