Given a input vector x, return y as index-powered vector as shown below.
x = [2 3 6 9]
then y should be
[2^1 3^2 6^3 9^4] = [2 9 216 6561]
Make the vector [1 2 3 4 5 6 7 8 9 10]
Find all elements less than 0 or greater than 10 and replace them with NaN
Better bullseye matrix
Narcissistic number ?
Let's get back to school: create mixed numbered fraction
Let's get back to school, and create multiplication tables
Best Fit RMS
Matrix multiplication across rows
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