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.
Verify that f(x) = 2x + 4 and g(x) = (x - 4)/2 are inverses by computing f \circ g and
Verify that f(x) = 2x + 4 and g(x) = (x - 4)/2 are inverses by computing f \circ g and
Natural Language
Math Input
Extended Keyboard
