Study23
Help (Evaluate Limit)



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Study23
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I'm not really understanding this, I attempted this for the last 30 minutes... \(\ \Huge \lim_{(x \rightarrow 7)} \frac{\sqrt{x+2}3}{x7} \)

experimentX
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rationalze it ... or use l'hospital rule

experimentX
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*rationalize numerator

abhijitjain1995
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dw:1339357875786:dw

Study23
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How would I rationalize?

zepp
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Multiply by the conjugate of the denominator.

abhijitjain1995
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dw:1339358153740:dw

Study23
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So, multiplying by the conjugate yields:
dw:1339358330856:dw

experimentX
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cancel out (x7) on both numerator and denominator ... and put the value x

Study23
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Got it! Thanks all!

zepp
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It's numerator here, not denom :x
http://puu.sh/A3Vb
Sorry about it, lol