document.write( "Question 390486: I'm having a lot of trouble graphing this rational function:\r
\n" ); document.write( "\n" ); document.write( "How do I graph the function f(x)=(x+4)/(x^2-16)?
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Algebra.Com's Answer #276958 by Alan3354(69443)\"\" \"About 
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How do I graph the function f(x)=(x+4)/(x^2-16)?
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\n" ); document.write( "Factor the denominator, then reduce it to f(x) = 1/(x-4)
\n" ); document.write( "Pick values for x and find f(x), or y.
\n" ); document.write( "y = 1/(x-4)
\n" ); document.write( "x....y
\n" ); document.write( "0....-1/4 --> (0,-1/4)
\n" ); document.write( "1....-1/3 --> (1,-1/3)
\n" ); document.write( "2....-1/2 --> (2,-1/2)
\n" ); document.write( "etc
\n" ); document.write( "Find as many points as you need, plot them, draw a smooth curve thru them.
\n" ); document.write( "That's how you graph anything.
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\n" ); document.write( "You can use Excel to do the calculation.
\n" ); document.write( "dl the FREE graph software at
\n" ); document.write( "http://www.padowan.dk\r
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