Problem 2905. Decide whether determinant is zero.

Solution 3844493

Submitted on 25 Nov 2020

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Test	Status	Code Input and Output
1	Fail	x = [4,3,6; 2,5,3; 8,2,6] y_correct = 0; assert(isequal(is_it_zero(x),y_correct)) x = 4 3 6 2 5 3 8 2 6 x = 4 3 6 2 5 3 8 2 6 ans = -84 y = logical 1 Assertion failed.
2	Pass	x = [1,2,3; 4,5,6; 7,8,9] y_correct = 1; assert(isequal(is_it_zero(x),y_correct)) x = 1 2 3 4 5 6 7 8 9 x = 1 2 3 4 5 6 7 8 9 ans = -9.5162e-16 y = logical 1
3	Pass	x = [9,2,0; 4,4,0; 7,8,0] y_correct = 1; assert(isequal(is_it_zero(x),y_correct)) x = 9 2 0 4 4 0 7 8 0 x = 9 2 0 4 4 0 7 8 0 ans = 0 y = logical 1

Test

Status

Code Input and Output

Fail

x = [4,3,6; 2,5,3; 8,2,6] y_correct = 0; assert(isequal(is_it_zero(x),y_correct))

x = 4 3 6 2 5 3 8 2 6 x = 4 3 6 2 5 3 8 2 6 ans = -84 y = logical 1

Assertion failed.

Pass

x = [1,2,3; 4,5,6; 7,8,9] y_correct = 1; assert(isequal(is_it_zero(x),y_correct))

x = 1 2 3 4 5 6 7 8 9 x = 1 2 3 4 5 6 7 8 9 ans = -9.5162e-16 y = logical 1

Pass

x = [9,2,0; 4,4,0; 7,8,0] y_correct = 1; assert(isequal(is_it_zero(x),y_correct))

x = 9 2 0 4 4 0 7 8 0 x = 9 2 0 4 4 0 7 8 0 ans = 0 y = logical 1

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