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# Problem 752. Is X a Fibonacci Matrix?

Solution 1946100

Submitted on 23 Sep 2019
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### Test Suite

Test Status Code Input and Output
1   Fail
x = [0 1;1 1]; tf = true; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 0

Assertion failed.

2   Pass
x = [1 0;1 1]; tf = false; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0

3   Fail
x = [0 1;1 1]^40; tf = true; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0

Assertion failed.

4   Pass
x = [0 1;1 1]^40+1; tf = false; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0

5   Fail
x = [0 1;1 1]^17; tf = true; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0

Assertion failed.

6   Pass
x = [0 1;1 1]^17-5; tf = false; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0

7   Pass
x = [0 0 1;0 1 1;1 1 1]^3; tf = false; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 0 tf = logical 0

8   Pass
x = [0 0 1;0 1 1]; tf = false; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0

9   Pass
x = [[0 1;1 1]^3 [5; 8]]; tf = false; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 1 tf = logical 0

10   Fail
x = uint8([0 1; 1 1]^5); tf = true; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0

Assertion failed.

11   Fail
x = -([0 1; 1 1]^5); tf = false; assert(isequal(isFibMat(x),tf)) clear all;

Output argument "tf" (and maybe others) not assigned during call to "isFibMat". Error in Test11 (line 3) assert(isequal(isFibMat(x),tf))

12   Pass
x = [0 1; 1 1]^5; x(2) = nan; tf = false; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0

13   Pass
x = [4 7;7 11]; tf = false; assert(isequal(isFibMat(x),tf)) clear all;

tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0 tf = logical 0

14   Fail
for ii = 1:55 assert(true==isFibMat([0 1;1 1]^ii)) end

tf = logical 0 tf = logical 0

Assertion failed.