document.write( "Question 1177625: Given f(x) =x^2. Write the resulting function g(x) that is there obtained by taking f(x) and compressing it horizontally by a factor of 1/2 and then reflecting it over the y-axis. \n" ); document.write( "
Algebra.Com's Answer #806753 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=+x%5E2\" compressed horizontally by a factor of \"1%2F2\" is \r
\n" ); document.write( "\n" ); document.write( "\"g%28x%29+=f+%28hx%29+\"\r
\n" ); document.write( "\n" ); document.write( "if \"0%3Ch%3C1\" the graph is stretched horizontally by a factor \"1%2Fh\"
\n" ); document.write( "if \"h%3E1\" the graph is compressed horizontally by a factor \"1%2Fh\"\r
\n" ); document.write( "\n" ); document.write( "in your case\r
\n" ); document.write( "\n" ); document.write( "\"h=1%2F2+\"=>compressed horizontally by a factor \"1%2Fh=1%2F%281%2F2%29=2\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28x%29+=%282x%29%5E2\"\r
\n" ); document.write( "\n" ); document.write( "reflecting it over the \"y\"-axis:\r
\n" ); document.write( "\n" ); document.write( "The graph is reflected about the y-axis when \"f%28x%29=f%28-x%29\".
\n" ); document.write( "Reflecting this function across the y-axis, we replace \"x\" by \"-x\". Hence, the reflection across the \"y\"-axis is \"f%28-x%29=%28-x%29%5E2=x%5E2\", nothing changes\r
\n" ); document.write( "\n" ); document.write( "Therefore, the reflection is the \"same\" as the original function.\r
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\n" ); document.write( "\n" ); document.write( " \"g%28x%29+=%28-2x%29%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+x%5E2%2C+%28-2x%29%5E2%29+\"\r
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