document.write( "Question 87303: Determine the symmetry (relative to the x-axis, y-axis, and/or orgin) of the graph of the following function. No need to submit graph. g(x) = 3x^2.\r
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Algebra.Com's Answer #63240 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Remember, a function is even when this equality is true:\r
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\n" ); document.write( "\n" ); document.write( "\"f%28x%29=f%28-x%29\"\r
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\n" ); document.write( "\n" ); document.write( "and a function is odd when this equality is true:\r
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\n" ); document.write( "\n" ); document.write( "\"-f%28x%29=f%28-x%29\"\r
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\n" ); document.write( "\n" ); document.write( "Lets see if the function is even:\r
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\n" ); document.write( "\n" ); document.write( "\"y=3x%5E2\" Start with the given equation\r
\n" ); document.write( "\n" ); document.write( "Here's \"f%28x%29\":\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29=3x%5E2\" This is the given equation\r
\n" ); document.write( "\n" ); document.write( "Here's \"f%28-x%29\":\r
\n" ); document.write( "\n" ); document.write( "\"f%28-x%29=3%28-x%29%5E2\" Replace x with \"-x\"\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-x%29=3x%5E2\" Simplify\r
\n" ); document.write( "\n" ); document.write( "Since \"3x%5E2=3x%5E2\", this means the equation \"f%28x%29=f%28-x%29\" is true.\r
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\n" ); document.write( "\n" ); document.write( "Since \"f%28x%29=f%28-x%29\", the equation \"y=3x%5E2\" is an even function. This means the equation has symmetry with respect to the y axis\r
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\n" ); document.write( "\n" ); document.write( "Now lets see if the function is odd:\r
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\n" ); document.write( "\n" ); document.write( "\"y=3x%5E2\" Start with the given equation\r
\n" ); document.write( "\n" ); document.write( "Here's \"f%28-x%29\":\r
\n" ); document.write( "\n" ); document.write( "\"f%28-x%29=3x%5E2\" Remember we solved for this previously\r
\n" ); document.write( "\n" ); document.write( "Here's \"-f%28x%29\":\r
\n" ); document.write( "\n" ); document.write( "\"-f%28x%29=-%283x%5E2%29\" Negate the whole function\r
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\n" ); document.write( "\n" ); document.write( "\"f%28-x%29=-3x%5E2\" Distribute the negative and simplify\r
\n" ); document.write( "\n" ); document.write( "Since \"-3x%5E2\" does not equal \"3x%5E2\", this means the equation \"-f%28x%29=f%28-x%29\" is not true.\r
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\n" ); document.write( "\n" ); document.write( "Since \"-f%28x%29\" does not equal \"f%28-x%29\", the equation \"y=3x%5E2\" is not an odd function.\r
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\n" ); document.write( "\n" ); document.write( "When we graph the equation \"y=3x%5E2\", we can see if the equation has any symmetry:\r
\n" ); document.write( "\n" ); document.write( "\"+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+3x%5E2%29+\"\r
\n" ); document.write( "\n" ); document.write( "and we can clearly see that the equation is symmetrical with respect to the y axis\r
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