There is a 3d matrix [A] that consist of many zeros and only one.
Where is one? Find [i j k].
(hint:use find and ind2sub)
Clock Hand Angle 1
Whether the input is vector?
Reverse a matrix
Change matrix to vector
Solve system of equation!
Determine point is located in a circle or not
Replace 0 to NaN!
Analyze observation data
Calculate inverse matrix in m by n matrix
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