document.write( "Question 1037048: Find (fog)(x) and (gof)(x) and domain of each f(x)= x+1, g(x)= x-1 \n" ); document.write( "

Algebra.Com's Answer #651735 by Aldorozos(172) $\"\"$ $\"About$

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The domain for f(x) is R = all real numbers
\n" ); document.write( "The domain for g(x) is R = all real numbers\r
\n" ); document.write( "\n" ); document.write( "(fog)(x) = (x-1)+1 = x
\n" ); document.write( "(gof)(x) = (x+1)-1 = x\r
\n" ); document.write( "\n" ); document.write( "Please note that fog(x) means in f(x) = x+1 You have to replace x with g(x). If you do that you will get (fog)(x) = (x-1)+1 = x
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