document.write( "Question 1187951: f(x)=x²+1, where x>0 is the function defined by the graph below. find f-¹, then graph it using the same graph below
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Algebra.Com's Answer #818996 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( " $\"f%28x%29=x%5E2%2B1\"$ , where $\"x%3E0\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"f%28x%29=y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=x%5E2%2B1\"$ .....swap variables\r
\n" ); document.write( "\n" ); document.write( " $\"x=y%5E2%2B1\"$ ........solve for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y%5E2=x-1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=sqrt%28x-1%29\"$ \r
\n" ); document.write( "\n" ); document.write( "=> $\"f%5E-1%28x%29=sqrt%28x-1%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"download-1\"$ \r
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