Problem 1026. Solving a quadratic equation

Created by Abdelhak ARESMOUK

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?><w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Given a, b and c, Return the solution of the following quadratic equation: a*x^2 + b*x + c = 0.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

472 Solutions
82 Solvers

Last Solution submitted on Mar 12, 2021

Last 200 Solutions

Problem Comments

5 Comments

5 Comments

Show 2 older comments

Rody Oldenhuis on 6 Nov 2012

Might want to adjust your assertions there...the _order_ of the solutions should not matter of course, and in case there is a single root, an output of either 1 or 2 equal numbers should be permissible

J-G van der Toorn on 6 Nov 2012

It's a pity that isequal returns false if the difference between the two arguments is only eps (2e-15).

J.R.! Menzinger on 6 Nov 2012

Why should the solution be giben in a certain way?? in this case the solution [-1 3] must be equal to [3 -1] ... :-/

Abdelhak ARESMOUK on 7 Nov 2012

I will edit the problem. And give more explanations.

li haitao on 16 Nov 2018

Bad test suit.

Solution Comments

Solution 559106

1 Comment

1 Comment

Matthew Eicholtz on 17 Jan 2015

Not a great solution, but not a great test suite either.

Solution 160057

1 Comment

1 Comment

@bmtran (Bryant Tran) on 20 Nov 2012

wow, my use of transpose instead of ctranspose destroyed me this time...

Problem Recent Solvers82

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 1026. Solving a quadratic equation

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers82

Suggested Problems

More from this Author2

Problem Tags

Community Treasure Hunt

Problem 1026. Solving a quadratic equation

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers82

Suggested Problems

More from this Author2

Problem Tags

Community Treasure Hunt

Players