# Calc I

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Yes I was trying to find the range

y = (x^2 -4)/(x^2 - x -12)

ok using 2(4 +/- sqrt(15) )

sorry I forgot the minus in the derivitive but ya that makes sense but however I need three critical values that only gives me graph it and you'll see there are three how do I find the third one one

• Calc I -

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