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so i found the derivative: 12x^2 -26x +4

correct?

yup.

do you know hot to factor: 12x^2 -26x +4

I'll try and see if I can help but can't promise
so yeah you have the derivative right

not on calculator though... i just need to know just in case.

i must factor first in order to = to 0

so to find max and min you find the derivative set it = to 0 and solve?

yes i have to find the critical points.. then evaluate the point to original function

then evaluate with the endpoints. then i'll find max and min

so you have 1/6 and 2 for the critical points right?

@campbell_st @precal @heradog the more help the better! :( i really need to figure this problem out.

well.... i don't know how to factor this exactly: 12x^2 -26x +4

since derivative is right... then how do i factor it out?

|dw:1363327156303:dw|

|dw:1363327198254:dw|

hm... i did that also... but then i have to find x . critical points.

|dw:1363327232310:dw|

|dw:1363327276945:dw|

are you given those intervals? [1,4] and [0,2]

im already used to them...

|dw:1363327423329:dw|

|dw:1363327470127:dw|

|dw:1363327620907:dw|it is an old jedi trick called slide and divide, makes factoring easier to do

the attached image may help

max at x=1/6 and min at x=2

|dw:1363327660835:dw|

|dw:1363327725416:dw|

what i meant t say how? i know you said a trick way but i don't know how... :/

true but if this is for a calculus ab class, they are taught to do 1st d/dx to determine max and min

stilll dont understand .. :(

like I said earlier, use whatever works for you. This problem is beyond factoring......

yes i used that too. i mea im fine with everything except factoring now.

well I like to use slide and divide

i never used that technique before

look it up, you will find many videos on it on youtube. good luck. factoring gets easier over time.

thanks :)

yw

somebody help pls!

gotta go will help you tomorrow, it is very late for me at the moment (past 2 am)