Question

How to do inverse functions?

Answer 1

f(x)=sqr(2x-6)

Answer 2

\[y = \sqrt{2x-6}\]

Answer 3

is that right?

Answer 4

yes!

Answer 5

if it is, all you need to do is flip x and y

Answer 6

\[x = \sqrt{2y-6}\]

Answer 7

are you able to solve for y?

Answer 8

OH Wow thats a lot easier than I figured. That makes sense though. I was just confused from more complicated problems. Thanks!

Answer 9

yep np

Answer 10

tell me the answer when your done

Answer 11

y=(x^2/x)+3

Answer 12

i got \[y = \frac{ x^2 + 6 }{ 2}\]

Answer 13

JACK: please go through Alystar's solution step by step to help him/her with any errors.

Answer 14

mathmale i am

Answer 15

But let him/her do the actual work!

Answer 16

i am seeing if he can see what is wrong first

Answer 17

(or her)

Answer 18

So if the question is to find the inverse of f(x) would the answer be just \[y = \frac{ x^2 + 6 }{ 2}\]

Answer 19

yes, im trying to figure where you went wrong

Answer 20

or do you not even have to simplify it

Answer 21

wait a min

Answer 22

you were right!

Answer 23

i didnt simplify, ha!

Answer 24

we have equivalent answers :D:D:D

Answer 25

Haha! okay. So, it doesn't matter which answer I use. Great! Thanks!

Answer 26

@mathmale , we're good here. Thanks

Answer 27

well depending on your teacher, mine doesnt care whether fraction like that or not, it looks neater some times in one fraction

Answer 28

Accuracy is everything. Looks come second. ;)