Posted by Ali on Monday, November 1, 2010 at 10:44am.
write it as
x + y = b
now recall how you take the inverse.
Isn't your first step simply to switch around the x and y variables?
So what you you get ?
The same equation, just simply switched:
if you have
x+y= b, the inverse is y+x=b, which is the same thing and therefore its own inverse?
Thank you!
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