Question

lim Sqrt(20x-8/10x-3y)
x 4

I know the answer and I just want to learn about Limits, so any other example would suffice as well.

Answer 1

y?

Answer 2

yes

Answer 3

plug in 4

Answer 4

72/40-3y

Answer 5

yep

Answer 6

this is a weird question, normally we only have one variable, but whatever...

Answer 7

oh so is 72/40-3y the answer

Answer 8

there are now limitation on y

Answer 9

In limits, do you just try to make the denominator zero

Answer 10

in general that is what you are trying to avoid.

Answer 11

lim p^2-9/5p+15 How would i solve this?
x -3

Answer 12

should that x be a p?

Answer 13

yeah

Answer 14

it is just another variable

Answer 15

it matters...

Answer 16

also imagine there are parenthesis

Answer 17

do you know about l'hopitals rule?

Answer 18

no

Answer 19

you need it for this

Answer 20

ok

Answer 21

because you get 0/0 if you plug it in

Answer 22

so you take the derivative of top and bottom and then run the limit again. you will learn about this later

Answer 23

ok Thank you

Answer 24

np m8