Write a cubic formula function - MATLAB Cody - MATLAB Central

Problem 1954. Write a cubic formula function

Difficulty:
(49)
Rate

Create a function that will output the three roots of a cubic equation specified by the 4 coefficients listed as input. The output should be sorted using the "sort" function of matlab, to be consistent. Also, the output need only be accurate to the 4th decimal place, and the input "A" will always be non-zero and real.

Example:

A*x^3+B*x^2+C*x+D=0 --> [A,B,C,D]

x^3-6x^2+11x-6=0 --> [1,-6,11,-6]

cubicFormula([1,-6,11,-6]) --> [1,2,3]

Solve

Solution Stats

11.82% Correct | 88.18% Incorrect
Last Solution submitted on Jan 12, 2024

Problem Comments

Solution Comments

Show comments
Registration Now Open for MathWorks AUTOMOTIVE CONFERENCE 2025
...
Hello Community, We're excited to announce that registration is now open for the...

Problem Recent Solvers19

Suggested Problems

More from this Author1

Problem Tags

cubic formula

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
Go to top of page