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[url=http://www.wolframalpha.com/input/?i=graph+0.8%2F%28e^%28%28x-10%29%2F2%29%2B1%29%2B.2%2C+x+from+0+to+30+y+from+0+to+1]Equation 1[/url][url=http://www.wolframalpha.com/input/?i=graph+0.4*%28%281-.01*x^2%29%2F%281%2B.01*x^2%29%29%2B.6%2C+x+from+0+to+30+y+from+0+to+2]Equation 2[/url]