Question

is this RIGHT..??

Arrange the steps in the correct sequence to find the inverse function of f(x)=3x-15/2

Answer 1

here

Answer 2

@iambatman

Answer 3

To find the inverse:

Replace f(x) with y
Switch x's and y's, so put x where y is and x where y is.
Solve for y
Replace y with f^-1(x)

Answer 4

Follow these steps and you'll get it :)

Answer 5

\[\begin{align}

f(x) = y &= \dfrac{3x-15}{2}\\
&\downarrow\\


\end{align}\]

Answer 6

step1 looks good as you have started with the given function

Answer 7

Wait...you started with (3x - 15)/2 but the 2nd line has 3x + 15 = 2y?

Answer 8

yeah second step should be replaced

Answer 9

i know @Miracrown is weird

Answer 10

Oh, you have other choices in the tiles

Answer 11

Look at what I said after replacing f(x) with y, second step is wrong. Switch x's and y's, so put x where y is and x where y is.

Answer 12

in step2 you swap x and y

Answer 13

Yes, let me look at it again...

Answer 14

so which one is that?

Answer 15

Look at your tiles

Answer 16

The first step should be to switch x and y
That's what an inverse means
So I'm thinking x = (3y - 15)/2 is first

Answer 17

\[\begin{align}

f(x) = \color{green}{y} &= \dfrac{3\color{Red}{x}-15}{2}\\
&\downarrow\\
\color{Red}{x} &= \dfrac{3\color{green}{y}-15}{2}\\


\end{align}\]

Answer 18

i would like to put a box around steps hmm but latex is not working

Answer 19

draw it out

Answer 20

i want to draw it out in latex

Answer 21

got that :)

Answer 22

ganeshie xD

Answer 23

http://prntscr.com/51u94f
If you are allowed to change that first tile, then the first step should
be to say that f(x) = y And then switch x and y

Answer 24

Your third step is wrong man

Answer 25

yep i did it :)..so what abot step 3,4,5

Answer 26

You have to solve for y not x

Answer 27

i knew it -_-

Answer 28

So lets put it in order here

Answer 29

Step 1. \[f(x) = y = \frac{ 3x-15 }{ 2 }\]

Step 2.

\[x = \frac{ 3y-15 }{ 2 }\]

Now lets solve for y.

Step 3.

\[2x = 3y-15\]

Answer 30

Now what would be next?

Answer 31

add them? or subtract?

Answer 32

Add the 15 on both sides, what do you get?

Answer 33

go away dan

Answer 34

I probably wouldn't look at the choices yet...I would solve the whole thing for the inverse first, then look at the choices.
The boxes get too confusing since they threw in "wrong" steps to throw you off

Answer 35

inverse is u wanna do the steps backwards such that u get back what u started with

Answer 36

2x+15=3y

Answer 37

Yeah good job @cmvbubu

Answer 38

What's after that?

Answer 39

this is crazy but i apreciate everybodys help in here !:D

Answer 40

if y= f(x)
what shud x be
then the function that is giving back the x now is called the inverse function
x=f'-1(y)
but we say hey y is the unknown and x is the input so
y=f^-1(x)

Answer 41

Step 4.

\[3y = 2x+15\]

Answer 42

so u end up with f^-1(x)=y=2x+15/3

Answer 43

now given some input u get to know y, which is the value u must have put into the forward function for x to get back the x u put in when is the y from that one

Answer 44

Yay good job @cmvbubu :)

Answer 45

now given some input u get to know y, which is the value u must have put into the forward function for x to get back the x u put in which* is the y from that one

Answer 46

perfect explaination i know ty danke

Answer 47

"dan"ke

Answer 48

dan you were a fat baby

Answer 49

wait i think all babies are fat

Answer 50

This is abb0t not me

Answer 51

Oh makes sense

Answer 52

i change step 4?

Answer 53

i just did

Answer 54

Your step 3 was wrong

Answer 55

step 4 and 5 were right

Answer 56

SO basically 2 and 3 were wrong for you

Answer 57

so it should look like this

Answer 58

So again,

To find the inverse:

Replace f(x) with y
Switch x's and y's, so put x where y is and x where y is.
Solve for y
Replace y with f^-1(x)

if you follow these steps all of these questions are pretty much the same.

Answer 59

Your step 4 is wrong now

Answer 60

waa lol ok hold on....

Answer 61

It should be 2x+15=3y don't know why you did that.

Answer 62

oh yeah i was confuse i didnt look at the variables

Answer 63

details suck

Answer 64

No, not really.

Answer 65

It can get confusing since you're dealing with inverses but after a couple of problems you'll realize it's usually the same, as far as you need to know for now.

Answer 66

DETAILS are important, that's how you get part marks ;)

Answer 67

details r for n00bs

Answer 68

Yeah, n00bs like u - dan

Answer 69

so this is the right one?

Answer 70

Looks good

Answer 71

the negative of dan is a n00b so the positive is so pro

Answer 72

Pfft.

Answer 73

Cage match, dan vs Mira

Answer 74

im not entering a cage with that witch on halloween

Answer 75

so last question why u so smart?? dont tell me cause you are BATMAN!!

Answer 76

loool

Answer 77

Dan: 0
Mira: 1

Answer 78

Mira: i

Answer 79

Me smart? Omg I'm so flattered, I'm an idiot these other people are geniuses :p

Answer 80

Thanks everybody here new Fan :)

Answer 81

No one is smarter than me ;)

Answer 82

on the imaginary axis!

Answer 83

Shhhh

Answer 84

bahahah

Answer 85

I bet ganeshie is writing a lecture for us

Answer 86

http://mathworld.wolfram.com/Witchoowletnesi.html Need to mention this before halloween ends!

Answer 87

Least ganeshie got the box's to work

Answer 88

It was ended 18 hours ago.

Answer 89

12 minutes left here :)

Answer 90

Make them mins evil for everyone else.

Answer 91

why when u post a comment is says ''an hour ago'' when i know it was just a second ago?lol

Answer 92

The time stamp is messed up, some posts say yesterday when it was 5 minutes ago

Answer 93

Welcome to the OS ''Glitch'' Club.

Answer 94

^

Answer 95

jhajah ^ ok wow thats messup

Answer 96

Indeed.