Given provided system of equation, and find x and y.
System of equation can be expressed as each term's coefficient. For example,
[2 1 3; 1 1 2]
Make function that use above matrix as a input to find solution x and y.
Remove any row in which a NaN appears
Determine Whether an array is empty
Sum of the Matrix Elements
Solve equation numerically
Analyze observation data
Make roundn function
Calculate numerical integration.
Print true if
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