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Undefined. Infinity is not a number.

Indeterminate form.

ok actully this the question
y=lmx->inf (xe^x)/(x^2+2x-1)
use l hopitals rule

Use L'Hospital's rule if both numerator and denominator are infinity.

yeah the are

There you go.

i got inf/inf

Again? Use L'Hopital's rule again.

after taking their respective derivatives

i got inf/inf

Look like the answer is indeterminate since you can't get rid of e^x using derivative.

As x approaches to infinity, it approaches to infinity.

Does this clear everything?

yeah thanks :)

You're welcome.