perplexus.info :: Just Math : Arithmetic Roots

Arithmetic Roots (Posted on 2016-03-02)

For what values k does the polynomial f(x) = x^4 + 7x^3 + 9x^2 - 7x + k have three roots in arithmetic progression?

See The Solution Submitted by Brian Smith

Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Analytic solution (outline)	Harry	2016-03-02 12:19:05
solution with computer assist	Charlie	2016-03-02 10:32:09

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info