- #1
gamma-ray-burst
- 13
- 0
hey hi.
i'm just starting differentials and now we are seeing the limits.
i have a question.
there is one example that goes like this :
lim 4 / (x²+2x+1)
x--> -1
well with simple calculations using -1(-) and -1(+), i know that the answer is infinity.
plus, if i trace the graph, there's an asymptote at -1.
but I'm not supposed to use a calculator.
well at the exam we can't have one.
so i do it by hand.
when i plug, let's say, -1.000001 and -0.999999, it gives me 4/0 for both.
can i say that it's infinity, or would it have to be 4/0(+)?
i feel that it's really easy, yet I'm stuck :(
also, if i get something like (1(+))², does it stays 1(+) or does it becomes like 1.0000000002?
thanks!
i'm just starting differentials and now we are seeing the limits.
i have a question.
there is one example that goes like this :
lim 4 / (x²+2x+1)
x--> -1
well with simple calculations using -1(-) and -1(+), i know that the answer is infinity.
plus, if i trace the graph, there's an asymptote at -1.
but I'm not supposed to use a calculator.
well at the exam we can't have one.
so i do it by hand.
when i plug, let's say, -1.000001 and -0.999999, it gives me 4/0 for both.
can i say that it's infinity, or would it have to be 4/0(+)?
i feel that it's really easy, yet I'm stuck :(
also, if i get something like (1(+))², does it stays 1(+) or does it becomes like 1.0000000002?
thanks!