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Using L'Hopital's Rule, Find $Lim_{x\to\infty} \frac{3x^3}{x^2}$

hipie Jun 13, 2022

CPhill · Answer 1 · 2022-06-13T04:57:04

We need to use it twice [ derivative of numerator / derivative of denominator ]

First time we get [ 9x^2] / [ 2x]

Second time we get [ 18x ] / 2 = 9x

So

lim 9x = inf [ so....the limit doesn't exist ]

x → inf