Given the vector x and the vector y, determine which sum is greater.
The test suite is not correct. Question is if sum of y is larger; not sum of x. And function arguments in test suite should include y.
Also, test suite does not define y_correct.
The test suite is not correct.
First non-zero element in each column
Back to basics 24 - Symbolic variables
Compute a dot product of two vectors x and y
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