Question

limit

Answer 1

\[\lim_{x \rightarrow -1} \sqrt{\frac{ 1-t^2 }{ 1+t }}\]

Answer 2

why is your limit has x approahing -1 and the function is in terms of t?

Answer 3

that was a typo an my behalf :$

Answer 4

factor the numerator to (1+t)(1-t) then cancel the (1+t) out so you are left with
\[\sqrt{1-t}\]

Answer 5

then you can substitue

Answer 6

@kphilips2010 that method is not correct

Answer 7

i dont think i ca use conjugates for this question

Answer 8

why is that wrong?

Answer 9

because it's not a binomia

Answer 10

binomial*

Answer 11

they are not conjugates, they are addition and addition is commutative

Answer 12

I didnt say it was a binomial, I am saying you can factor the binomial into (1+t)(1-t)

Answer 13

but isnt there another method, like multiply by the denominator or something of the like

Answer 14

no not in this case

Answer 15

LOL i am sure I am right...I hope

Answer 16

kphilips method is good imo.

Answer 17

thanks joemath314159

Answer 18

i know thats how i approached the question at first but my teacher said this method was wrong ? :S

Answer 19

hmmm I feel dumb

Answer 20

why did your teacher say you were wrong?

Answer 21

i dont know she said there was something wrong with the method :S

Answer 22

does she know what she is talking about? LOL

Answer 23

sorry but i dont have another solution

Answer 24

is this what you're saying