Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
General Math
Calculus
Differential Equations
Topology and Analysis
Linear and Abstract Algebra
Differential Geometry
Set Theory, Logic, Probability, Statistics
MATLAB, Maple, Mathematica, LaTeX
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
General Math
Calculus
Differential Equations
Topology and Analysis
Linear and Abstract Algebra
Differential Geometry
Set Theory, Logic, Probability, Statistics
MATLAB, Maple, Mathematica, LaTeX
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Mathematics
Calculus
Finding intervals of a 3 degree function?
Reply to thread
Message
[QUOTE="BvU, post: 5447074, member: 499340"] Hello Kevin, :welcome: For a 3 degree function you can find a [U]maximum[/U] of 4 intervals: e.g. ##f(x) =x^3## doesn't have 4. You appear to be solving ##{df\over dx} = 0## and find something you don't seem to check ? Something is going wrong there... I am referring to your example ##f(x) = x^3 - 3x## For homework exercises, we have an excellent template that would be very helpful here! It goes like: [INDENT][COLOR=rgb(5, 5, 5)][h2]Homework Statement [/h2][h2]Homework Equations[/h2][h2]The Attempt at a Solution[/h2][/COLOR][/INDENT] A further comment: I should think that you are supposed to be able to decompose the f(x) from the example and the f(x) from 7.70 in factors easily. Both can be written in the form of (x-a)(x-b)(x-c) c.q. (x-a)(x-b). If not, practice ! [/QUOTE]
Insert quotes…
Post reply
Forums
Mathematics
Calculus
Finding intervals of a 3 degree function?
Back
Top