document.write( "Question 101203: f(x) = 2x -1
\n" ); document.write( "g(x) = Square root (x-1)\r
\n" ); document.write( "\n" ); document.write( "Find the domain of f, g, f+g, f-g, fg, ff, f/g, and g/f.\r
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\n" ); document.write( "\n" ); document.write( "I actually got the answers to the domain of f and g, but i'm confused on how to find the others based on just f and g. \r
\n" ); document.write( "\n" ); document.write( "Like for the domain of f, I got (-infinity, positive infinity)
\n" ); document.write( "then for the domain of g, (negative infinity, 1) U (1, positive infinity)\r
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Algebra.Com's Answer #73675 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
(x) = 2x -1
\n" ); document.write( "g(x) = Square root (x-1)
\n" ); document.write( "Find the domain:
\n" ); document.write( "f: all real numbers
\n" ); document.write( "g: x>=1
\n" ); document.write( "f+g: x>=1 because sqrt(x-1) is one of the terms
\n" ); document.write( "f-g: x>=1 becaue sqrt (x-1) is one of the terms
\n" ); document.write( "fg= f(sqrt(x-1))= 2sqrt(x-1)-1: x>=1 same reason
\n" ); document.write( "ff: all Real numbers
\n" ); document.write( "f/g = (2x-1)/sqrt(x-1)
\n" ); document.write( "Domain is x > 1
\n" ); document.write( "g/f = sqrt(x-1)/(2x-1)
\n" ); document.write( "Domain is x>=1
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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