Find the numeric mean of the prime numbers in a matrix.
Find the alphabetic word product
Energy of a photon
Replace Vector Elements
Convert a Cell Array into an Array
Average of corner elements of a matrix (★★)
How to locate the position of an element in a vector without using the find function
Approximate functions 1 (★★★)
Create a vector of the first n natural numbers (★)
Make a checkerboard matrix (★★★★★)
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