Question

I have a math question but I can't rewrite it into here for help, is there a way to paste an image or attach an image? I really need help with this math problem

Answer 1

yes

Answer 2

Do you see at the bottom of your comment box? It says attach file...

Answer 3

save the image to your computer then attach file.

Answer 4

save the image and then click attach file and attach the image

Answer 5

if u are having problems send me the url in a messge and i will put the picture on for you

Answer 6

ok, thank you! I am shiny, brand new to this site! attaching file now...

Answer 7

no, problems with the site, all my math homework comes across as an image and so it's hard to copy is all

Answer 8

\[f(x) = x +4 and g (x) = -x2 + 3 , find (gof) (x)\]

Answer 9

Well firstly allow me to welcome you to Openstudy :~)

In my opinion it would have been easier to type the equation as opposed to making everyone download it.

Answer 10

\[f(x) = -x \ +4 and g (x) = -x2 + 3 , find (gof) (x)\]

Answer 11

their we go sorry bout the first one

Answer 12

my confusion on that problem is whether she is asking me to multiply functions, later she asks me another equation and asks me to find (fg)(x) which I assume means to multiply, therefore I am confused as to what I am supposed to do

Answer 13

find (gof)? ive never seen this is in an equation before.

Answer 14

me neither, hence my confusion...

Answer 15

I think the "o" is raised, a symbol, not the letter "o"

Answer 16

Oh. you've got your two equations \(f(x)=-x+4\) and \(g(x)=-x^2 +3\) right?

Answer 17

@Jhannybean Yes

Answer 18

Alright. So you're to find \(g \ o \ f\) which is the same as \(g(f(x))\)

Answer 19

isn't that just multiplying?

Answer 20

For this, plug in your function f(x) into the variable"x" in g(x)

Answer 21

No, this is substituting a function asa variable to find a general equation.

Answer 22

OH so I rewrite -x2+3 but instead of x I put my f(x) function?

Answer 23

Yes :)

Answer 24

ahhahaha, ok! thank you very much. I was turned on to this site by one of my classmates because I am a total dunce when it comes to math.

Answer 25

\[\large g(f(x)) = -(-x+4)^2+ 3\]

Answer 26

Jhanny saves the day again!

Answer 27

Simplify what is inside the parenthesis first. \[\large -(x^2 -8x+16)+3\]

Answer 28

then distribute the negative

Answer 29

Yep :)

Answer 30

Then simplify the equation.

You've got it from here :D

Answer 31

yep. but what if they give you and equation and want g o f (#) instead of g o f (x)? do you then insert f(x) in place of the # they gave you instead of the x?

Answer 32

i.e. f(x) 1-4x g(x) 3x2+2 (g(f(x)) (1)

Answer 33

Actually, yeah.you're right.

Answer 34

so solve the same way you showed me and then substitute x in the resulting answer for the number they gave you, in the above example, 1?

Answer 35

Let's try this out.

Answer 36

ok so f(x) = 1-4x and g(x) = 3x2+2

Answer 37

therefore... 3(1-4x)2 +2 ?

Answer 38

then factor and solve like before?

Answer 39

No no no....

Answer 40

you wnt to find.....g(f(1)), yes? f(x) -> f(1)

Answer 41

so f(x) = 1-4(1) which would solve to be -3 then insert -3 into the g(x) equation?

Answer 42

Yes! you're on the right path :) f(1) = -3 :) and now you're finding g(-3) :)

Answer 43

see, it makes sense if someone can just walk me through how to do it once, but all the notes and videos I get in class only confuse me more. Thank you very much for all your help!! I might actually pass this class (this is my 3rd attempt!) and it's only math 1314...

Answer 44

Just read the book and follow their methods :D

Answer 45

I tried, but I really just don't understand, if you want me to parse your sentences or proofread and essay I'm your gal, but math....nope.

Answer 46

So \(g(-3) = 3(-3)^2+2 = (3\cdot 9) +2 = 29 \) did you get that? :)

Answer 47

It happens. I fail at english and writing...anything to do with language.:\

Answer 48

yep, once you showed me how to set it up I sped right along to the end and got 29.

Answer 49

hehehe yea it's a give and take, you need help in English, you just let me know!

Answer 50

:D I've got to head out.Take care!

Answer 51

ttyl