document.write( "Question 46823: Can someone help me find the inverse of the following functions?? please???\r
\n" ); document.write( "\n" ); document.write( "f(x)=x+3
\n" ); document.write( "f(x)=x/(x+2)
\n" ); document.write( "f(x)=square root of x
\n" ); document.write( "f(x)=3^x....this one is 3 to the \"x\" power\r
\n" ); document.write( "\n" ); document.write( "please help me thank you!
\n" ); document.write( "

Algebra.Com's Answer #31013 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
find the inverse of the following functions?? please???
\n" ); document.write( "f(x)=x+3
\n" ); document.write( "Write as y=x+3
\n" ); document.write( "Interchange x and y as follows:
\n" ); document.write( "x=y+3
\n" ); document.write( "Solve for \"y\", as follows:
\n" ); document.write( "y=x-3
\n" ); document.write( "That is the inverse.
\n" ); document.write( "--------------------------
\n" ); document.write( "f(x)=x/(x+2)
\n" ); document.write( "y=x/(x+2)
\n" ); document.write( "x=y/(y+2)
\n" ); document.write( "xy+2x = y
\n" ); document.write( "xy-y=-2x
\n" ); document.write( "y(x+2)=-2x
\n" ); document.write( "y=-2x/(x+2), x not equal to -2
\n" ); document.write( "That is the inverse.
\n" ); document.write( "--------------------------
\n" ); document.write( "f(x)=square root of x
\n" ); document.write( "y=sqrtx
\n" ); document.write( "x=sqrty
\n" ); document.write( "x^2=y
\n" ); document.write( "y=x^2, x>=0
\n" ); document.write( "That is the inverse.
\n" ); document.write( "-----------------------------
\n" ); document.write( "f(x)=3^x
\n" ); document.write( "y=3^x
\n" ); document.write( "x=3^y
\n" ); document.write( "y=log(base3)x
\n" ); document.write( "That is the inverse.
\n" ); document.write( "------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );