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Mathematics 18 Online
OpenStudy (anonymous):

what is the value of cos infinity

OpenStudy (anonymous):

Infinity? Lol

OpenStudy (anonymous):

lies between -1 and 1

OpenStudy (anonymous):

including -1 and 1

OpenStudy (anonymous):

It's undefined.

OpenStudy (anonymous):

lim x-->infinity cos x. Using large numbers don't work on my calculator, and shouldn't it need to be a real number to fall somewhere on the oscillation, rather than somewhere in [-1,1]? As x grows large, cos x just continues to oscillate in [-1,1], so this limit is undefined.

OpenStudy (anonymous):

if so find cos(1478596323) on your calculator

OpenStudy (anonymous):

it defnetily gives some value and we know that it is in between -1 and 1

OpenStudy (anonymous):

lim x-> infinity (x^2sin(1/x)) can u tell me ans

OpenStudy (anonymous):

\[\lim_{x \rightarrow \infty}x^2(\sin(1/x))\] is it the same

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

then answer is infinite |dw:1418822462501:dw|

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