Write your own version of Frobenius Norm without using the 'norm' function.
Check if number exists in vector
Replace multiples of 5 with NaN
Symmetry of vector
Is this matrix orthogonal?
Find the "ordinary" or Euclidean distance between A and Z
Pythagorean perfect squares: find the square of the hypotenuse and the length of the other side
Find the definite integral of various linear functions
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