document.write( "Question 198356: Hello!\r
\n" ); document.write( "\n" ); document.write( "Find the inverse function of f.\r
\n" ); document.write( "\n" ); document.write( "f(x) = √8x + 2 \r
\n" ); document.write( "\n" ); document.write( "thanks for your help! \n" ); document.write( "

Algebra.Com's Answer #148842 by arallie(162) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"f%28x%29=sqrt%288x%29%2B2\"$
\n" ); document.write( " $\"f%5E-1%28x%29\"$ =?
\n" ); document.write( " $\"y=sqrt%288x%29%2B2\"$
\n" ); document.write( "Invert
\n" ); document.write( " $\"x=sqrt%288y%29%2B2\"$
\n" ); document.write( "Solve for y
\n" ); document.write( " $\"x%2B2=sqrt%288y%29\"$
\n" ); document.write( " $\"8y=%28x%2B2%29%5E2\"$
\n" ); document.write( " $\"y=%28%28x%2B2%29%5E2%29%2F8%29\"$
\n" ); document.write( "So
\n" ); document.write( "If $\"f%28x%29=sqrt%288x%29%2B2\"$
\n" ); document.write( "Then $\"f%5E-1%28x%29=%28%28x%2B2%29%5E2%29%2F8\"$ \n" ); document.write( "

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