The standard log() function in Matlab returns the natural logarithm (base equal to Euler's constant). Compute the logarithm for input x give an arbitrary base passed to the function.
The problem description has been improved and more test cases were added.
Energy of a photon
Return the first and last character of a string
Convert Fahrenheit to Celsius
0, 2, 0, -2, 0, 2, 0, -2, ...
Make an identity matrix whose diagonal elements are 1:n
Sample from random roulette
Return strings encapsulated by braces
Sort rows of a matrix
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