Question

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Answer 1

Yo

Answer 2

invertible as in... they have an inverse?

Answer 3

Yeah, on the interval of (-infinity, +infinity) though. So sin(x) wouldn't be invertible since you have to restrict the domain (I think that's how it goes)

Answer 4

ok

Answer 5

when seeing if the function has an inverse, use the horizontal line test. it says that if you can draw a horizontal line on the graph of the function and it hits the curve of the function more than once, it does Not have an inverse function.

Answer 6

ohh that's a lot easier. thanks

Answer 7

here are the first three functions graphed:
https://www.desmos.com/calculator/hhs4djcqsw

Answer 8

here are the last two functions:
https://www.desmos.com/calculator/q62hgl2cqc

Answer 9

do you see which two functions only pass the horizontal line test?

Answer 10

Yup, I got it. Thanks!

Answer 11

ur welcome ^_^
(medal?)