document.write( "Question 381432: f(x)+ 3x^2-4x+5.
\n" ); document.write( "Explain why you can't find f^-1(x). include a graph and be specific \n" ); document.write( "

Algebra.Com's Answer #270600 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"y=3x%5E2-4x%2B5\"$
\n" ); document.write( "Interchange $\"x\"$ and $\"y\"$ and solve for $\"y\"$ .
\n" ); document.write( " $\"x=3y%5E2-4y%2B5\"$
\n" ); document.write( " $\"x-5=3%28y%5E2-%284%2F3%29y%29\"$
\n" ); document.write( " $\"%28x-5%29%2F3=%28y%5E2-%284%2F3%29y%2B4%2F9%29-4%2F9\"$
\n" ); document.write( " $\"%28x-5%29%2F3%2B4%2F9=%28y-2%2F3%29%5E2\"$
\n" ); document.write( " $\"%283x-15%29%2F9%2B4%2F9=%28y-2%2F3%29%5E2\"$
\n" ); document.write( " $\"%283x-15%2B4%29%2F9=%28y-2%2F3%29%5E2\"$
\n" ); document.write( " $\"%283x-11%29%2F9=%28y-2%2F3%29%5E2\"$
\n" ); document.write( " $\"y-2%2F3=0+%2B-+sqrt%283x-11%29%2F3\"$
\n" ); document.write( " $\"y=2%2F3+%2B-+sqrt%283x-11%29%2F3\"$
\n" ); document.write( "This new y is the inverse of the original function.
\n" ); document.write( " $\"highlight%28f%5E%28-1%29%28x%29=2%2F3+%2B-+sqrt%283x-11%29%2F3%29\"$
\n" ); document.write( ".
\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( "

\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );