Question 1034887

Given that f(x)=|x| and g(x)=2x-4, calculate
<pre>
f&#9702;g(x)= f(g(x)) = f(2x-4) = |2x-4|
g&#9702;f(x)= g(f(x)) = g(|x|) = 2|x|-4
f&#9702;f(x)= f(f(x)) = f(|x|) = ||x|| = |x| 
g&#9702;g(x)= g(g(x)) = 2(2x-4)-4 = 4x-8-4 = 4x-12

Edwin</pre>