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Mathematics 20 Online
OpenStudy (anonymous):

evaluate the limit.

OpenStudy (anonymous):

\[\lim_{x \rightarrow \infty} e^{x -x^{2}}\]

OpenStudy (anonymous):

evaluate the exponent when x tends to infinity...since that tends to -infinity....so the limit will tend to e^(-infinity) which is zero

OpenStudy (gorv):

e^x*(1-x) e^infinity *(-infinity)=e^(-infinity)=1/e^infinity=0

OpenStudy (gorv):

as infinty * infinity= infinity

OpenStudy (gorv):

@mebs

OpenStudy (anonymous):

Here is what I tried. let u = -x so as x approaches -infinity u approaches infinity ...than I wrote It in terms of u

OpenStudy (anonymous):

\[\huge \lim{_{u \rightarrow \infty}} e^{-u-u^{2}}\]

OpenStudy (gorv):

yeah infinity is very very large its square will also infinity

OpenStudy (gorv):

u did correctly

OpenStudy (anonymous):

so its just 0 then

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