y=function([3 -2 -4])
In here, input vector indicate 3*x^2-2*x-4, y is solution of former equation.
2 b | ~ 2 b
Given a 4x4 matrix, swap the two middle columns
Is this triangle right-angled?
construct matrix with identical rows
Calculate some equation
Analyze observation data
Replace 0 to NaN!
Solve the system of linear equations
Where is 1?
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