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is 3 a bad value for x?

what do you mean?

what makes a bad fraction?

right, /0 is a bad fraction so x=3 makes this go bad

can we undo the offending part with algebra?\[\frac{(x+7)}{(x-3)^2}\]
prolly not

http://www.wolframalpha.com/input/?i=limit%7Bx+to+3%7D+%28x%2B7%29%2F%28x-3%29%5E2

inf aint a good answer then is it :)

it aint a real number so ....

Infinty and does exists are not same right?

exist means a definitive value; infinity is more a direction than a value i believe

right amistre

This limit exists and it is infinity...

what about x^2-x-20/2x^2-32, as x approaches -4

happy birthday myininaya

infinity is not a number

Right hand limit =left hand limit = infinity

so it does not exist

I know but infinity is not same as undefined.

amistre whats the screenshot for

but can anyone help with the last question i posted please

hes just saying the question in the window thingy is not the same as the question you asked

Myin, this is interesting: http://math.stackexchange.com/questions/36289/