document.write( "Question 940031: for the indicated functions f and g, find the functions f°g ,and g°f, and find their domains.\r
\n" ); document.write( "\n" ); document.write( "f(x)=|x+1|; g(x)= 2x + 3
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Algebra.Com's Answer #572880 by srinivas.g(540)\"\" \"About 
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f(x)=|x+1|; g(x)= 2x + 3
\n" ); document.write( "fog = f(g(x))
\n" ); document.write( " =f(2x+3)
\n" ); document.write( " replace x with 2x+3 in f(x)
\n" ); document.write( " = |2x+3+1|
\n" ); document.write( " =|2x+4|
\n" ); document.write( " fog =|2x+4|
\n" ); document.write( " Domain:
\n" ); document.write( "for values of x, the above said function is valid
\n" ); document.write( "hence domain is all real numbers (R)
\n" ); document.write( "gof = g(f(x))
\n" ); document.write( " = g(|x+1|)
\n" ); document.write( " replace x with |x+1| in g(x)
\n" ); document.write( " =2|x+1| +3
\n" ); document.write( "domain:for values of x, the above said function is valid
\n" ); document.write( "hence domain is all real numbers (R)
\n" ); document.write( "
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