Please, don't use cos, tan, cot matlab functions.
As per Solution 1043996, need to ban a couple of other functions to enforce instruction.
This is wrong. For example, x = 3*pi/4, cot(x) = -1; but this solution gives sqrt(1-sin(x)^2)/sin(x) = 1.
Back to basics 8 - Matrix Diagonals
Element by element multiplication of two vectors
Divisible by 2
Find the area of a triangle
Solve the following boundary value problem
Calculate the eigenvalues of A.
Return ! if array element starts with a certain letter. Otherwise return ?
Find the product of the positive elements above the main diagonal.
Solve the system of equations.
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