Question

if y=x^3-x^2-7x-3 what is the maximum value of y on the interval [-3,3]

Answer 1

can you find the critical points?

Answer 2

@shamil98 Do you know how to do this problem?

Answer 3

Yes, you would use the chain rule, right?

Answer 4

Nope, @shamil98 Is learning calculus so I want to know if this is up to his level.

Answer 5

\[\frac{ df }{ dx } =\frac{ df }{ dg } \times \frac{ dg }{ }\]

Answer 6

dg/dx*

Answer 7

@shamil98 It is just a polynomial, so you only need to use \(x^n\to nx^{n-1}\)

Answer 8

that's the formula atleast, i'm still a beginner at this stuff ._.

Answer 9

you would just find the derivative?

Answer 10

Well, what does derivative have to do with this problem?

Answer 11

We need it to find critical points: \(y'=0\)

Answer 12

Oh, i haven't gone up that point yet

Answer 13

Interesting, yet you knew how to find derivative. That is amazing

Answer 14

I'm not going by a class or anything, I was researching calculus and found derivatives and anti derivatives i just thought they were interesting lol

Answer 15

@shamil98 You look at any of those books I linked last night?

Answer 16

I'm in pre-calculus at the moment, but I'm taking a look at calculus through a textbook and online stuff.

Answer 17

@sherief Can you find derivative?

Answer 18

Sorry, mick.
Could you link them again?
I'm currently using "Thomas' Calculus Early Transcendental , Annotated Instructor's Edition:

Answer 19

Very good ones there for learning how to deal with problems like this one.
http://www.aimath.org/textbooks/textbooklist.html

This is another good resource:
http://tutorial.math.lamar.edu/Classes/CalcI/CalcI.aspx

Answer 20

thanks! I'll take a look at them. Calculus is a really interesting type of math , i should've taken a look at this subject earlier ..

Answer 21

For example, in the Paul's notes there is this:
http://tutorial.math.lamar.edu/Classes/CalcI/MinMaxValues.aspx

Which deals directly with the critical points Wio is going over.