Hi,
I'm confused about the results I'm getting when I evaluate some limits
with Sage. For example, I want to find the limit of f(x)=2x/(x-3) as
x approaches 3. So I compute the one-sided limits with Sage, which
work perfectly:
limit((2*x)/(x-3),x=3,dir='plus') {Gives output +Infinity}
limit((2*x)/(x-3),x=3,dir='minus') {Gives output -Infinity}
But, if I give Sage this command:
limit((2*x)/(x-3),x=3)
it gives me Infinity as output (with no sign). Why doesn't Sage tell
me that the limit doesn't exist?
Thanks,
Brandy
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