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]
Swap the first and last columns
Project Euler: Problem 10, Sum of Primes
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Multiply 2 numbers
Matrix multiplication across rows
Let's get back to school: create mixed numbered fraction
Find supported functions
Create a v-notch vector without "sort" function
Matrix rotation as per given angle
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