Estimate a using inverse matrix calculation. This is principle of linear regression.
As a friendly reminder, we can see the test suite, so it makes the problem more challenging if the solution is not explicitly in the test suite.
The Test Suite needs to allow for floating-point errors in all test cases, as demonstrated in Solution 1575603. (Refer to Problem 44690.) Also, there should be at least four test cases for every problem.
Back to basics 12 - Input Arguments
Fahrenheit to Celsius converter
03 - Matrix Variables 4
Solving Quadratic Equations (Version 1)
Cumulative product of a vector
Calculate geostrophic current
Calculate solution of given polynomial
Find x in provided equation!
Make roundn function
Two dimensional moving average
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