Question

Consider the two functions
f(x)=x^2 -8x+7

https://northbranchsd.owschools.com/media/o_advalg_2015/2/img_g_alg02u09c03l20d_01.gif

Do the minima of the two functions have the same x-value? Yes or No

Which of the functions has the greater minimum? f(x) or g(x)

Answer 1

@amistre64 @Ghostgate @jim_thompson5910

Answer 2

Is it ok if i watch this because I don't really get functions and I still gotta learn them <plus i have the same question>

Answer 3

@YoloShroom

Answer 4

@Michele_Laino @mathstudent55

Answer 5

Idk I did this question and I got it wrong so I dont know what I got wrong.

Answer 6

f(x)=x^2 -8x+7 =x^2-8x+16-9=(x-4)^2-9\[\ge -9\]

Answer 7

*BRAIN CRAMPS* Ok lemme try translating that to english in my head................ yeahno it's not working.... please explain omo

Answer 8

now the minimum value is -9 and it is obtained when x=4
Also from the graph we can easily see that the curve has minima at x=4. so yes, both have the same x value at minima

Answer 9

@Austin1617

Answer 10

Oh. So does the f(x) or g(x) have a greater minimum?

Answer 11

min g(x)=-4 and min f(x)=-9 so????

Answer 12

Oh wow -_-

Answer 13

@jango_IN_DTOWN is a good teacher o:

Answer 14

*is still so confused* ;-; i hate being new to a topic

Answer 15

@FrostFlare23 may I help you? Which part you cant follow?

Answer 16

@jango_IN_DTOWN Well seeming I don't even get half of what you said I'd say I can't follow alot of it omo

Answer 17

Ok.. see f(x)=x^2 -8x+7= x^2-8x+16-16+7=(x-4)^2-9
Do you have any problem in this line? see I just put it in the form x^2+a

Answer 18

Weeell I understand what it says but I have a question of my own so you can explain functions there? I've literally had no experience with functions that is why I'm confused.

Answer 19

ok go for it