anonymous
  • anonymous
Without using L'Hospital's Rule, how does one show that lim -> infinity of (X^2)/e^x = 0?
MIT 18.01 Single Variable Calculus (OCW)
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
That's supposed to read X-> infinity ...
nenadmatematika
  • nenadmatematika
function e^x grows much faster than x^2 when x goes to infinity, so when x^2 reaches some big number, we can consider that e^x ''reaches'' infinity....so if you put big number over infinity the result iz zero, actually limit is zero....also if you would like to know...\[\ln x <
cristiann
  • cristiann
Consider the limit lim_{n→∞}((n²)/(eⁿ)); let b=e-1>0 C_{n}^{k} is a notation for "n choose k" -- the binomial coefficient from Newton binomial 0<((n²)/(eⁿ))=((n²)/((b+1)ⁿ))=((n²)/(∑_{k=0}ⁿC_{n}^{k}b^{k}))<((n²)/(C_{n}³b³))=((3!n²)/(n(n-1)(n-2)b³))→0 as n→∞ and use for example "The Squeeze Theorem" to get lim_{n→∞}((n²)/(eⁿ))=0 This line of reasoning works for any n^{α} with appropriate modifications.

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cristiann
  • cristiann
just a file to see the writing better
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