Question

Find the limit of the function by using direct substitution.

limit as x approaches 2 of (x^2+8x-2).

Answer 1

direct substituion means put the value of variable
just put x=2
limit=2^2+8*2-2
now just calculate it

Answer 2

18? Thank you!

Answer 3

will that work for this as well? find the limit of the function algebraically. limit as x approaches 9 (x^2-81)/(x-9)

Answer 4

is that just 0?

Answer 5

it is 0/0 form you read about it

Answer 6

so use l hopital rule

Answer 7

i dont know what that is?\

Answer 8

is.*

Answer 9

differentiate numerator and denominator individualy

Answer 10

0/0 mean after putting value of limit your ans is coming 0/0

Answer 11

so do i have to do anything further to that?