Make the following variable:
A 9x9 matrix of zeros, but with the following values on the main diagonal:
(Hint: use diag)
Find the sum of all the numbers of the input vector
Area of an Isoceles Triangle
Produce a cosine wave
05 - Vector Equations 1
04 - Scalar Equations 1
02 - Vector Variables 4
03 - Matrix Variables 6
07 - Common functions and indexing 4
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