Cody

# Problem 42987. Roots of a quadratic equation.

Solution 1698480

Submitted on 22 Dec 2018 by HH
• Size: 9
• This is the leading solution.
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### Test Suite

Test Status Code Input and Output
1   Pass
a=1; b=2; c=1; y_correct = [-1 -1]; assert(norm(quadRoots(a,b,c)-y_correct) < 10*eps)

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In quadRoots (line 2) In ScoringEngineTestPoint1 (line 5) In solutionTest (line 3)]

2   Pass
a=1; b=-5; c=6; y_correct = [2 3]; assert(norm(quadRoots(a,b,c)-y_correct) < 10*eps)

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In quadRoots (line 2) In ScoringEngineTestPoint2 (line 5) In solutionTest (line 5)]

3   Pass
a=1; b=5; c=6; y_correct = [-3 -2]; assert(norm(quadRoots(a,b,c)-y_correct) < 10*eps)

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In quadRoots (line 2) In ScoringEngineTestPoint3 (line 5) In solutionTest (line 7)]

4   Pass
a=2; b=10; c=12; y_correct = [-3 -2]; assert(norm(quadRoots(a,b,c)-y_correct) < 10*eps)

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In quadRoots (line 2) In ScoringEngineTestPoint4 (line 5) In solutionTest (line 9)]

5   Pass
a=1; b=19; c=90; y_correct = [-10 -9]; assert(norm(quadRoots(a,b,c)-y_correct) < 100*eps)

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In quadRoots (line 2) In ScoringEngineTestPoint5 (line 5) In solutionTest (line 11)]