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Math(Please help)
Posted by
Hannah
on
Monday, November 8, 2010
at 8:55pm.
Show that (f X g)(x) = (g X f)(x) = x for f(x)= 3x-5 and g(x)= x+5 / 3
I have know idea how to do this.
Math(Please help) -
Reiny
, Monday, November 8, 2010 at 10:02pm
Isn't
(3x-5)(x+5)/3 = ((x+5)/3)(3x - 5) ?
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