Return true if the input is a Smith number in base ten. Otherwise, return false. Read about Smith numbers at http://en.wikipedia.org/wiki/Smith_number.
A Smith number must be positive and have more than one factor.
First non-zero element in each column
Better bullseye matrix
Calculate the area of a triangle between three points
Is the input divisible by 3?
Test within tolerance
Split up vector or matrix delimited by NaNs
Get input and output variable names
Remove TeX from string
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