Question

fund the limit, if it exists

limx→9f(x),
f(x)=
[x+9 x<9]
[27−x x≥9]

Answer 1

@agent0smith

Answer 2

Usually i think you'd just plug in 0 for x but they arent equal, so does the limit not exist?

Answer 3

You definitely do not just plug in 0 for x.

In this case, you plug in the value that x is approaching, and check the left hand limit equals the right hand limit.

What value is x approaching?

Answer 4

oh, 9

Answer 5

So the limit is 18!!
right?