document.write( "Question 703357: f(x) = x+3
\n" ); document.write( " f^-1(x) = \n" ); document.write( "

Algebra.Com's Answer #433461 by Nfrey78(18) $\"\"$ $\"About$

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f(x) = x+3
\n" ); document.write( " f^-1(x) =\r
\n" ); document.write( "\n" ); document.write( "We are given a function and we want to find the inverse function f^-1(x)
\n" ); document.write( "The steps to finding any inverse function are quite simple
\n" ); document.write( "First rewrite using y instead of f(x) (makes it easier to manipulate the variables)
\n" ); document.write( "y = x + 3
\n" ); document.write( "Second step switch all instances of y with x and all x's with y's
\n" ); document.write( "x = y + 3
\n" ); document.write( "Third solve for the new y
\n" ); document.write( "y = x - 3
\n" ); document.write( "This should make sense. The inverse function means it does the opposite or will undo the first function. The opposite of adding 3 is subtracting 3.
\n" ); document.write( "So f^-1(x) = x - 3 \n" ); document.write( "

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