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.
vectorization in N
Find the dimensions of a matrix
Prime number removal
Find sum of negative elements in row.
Solve the following boundary value problem
Numerate input arguments
Find the sum of the negative elements under the main diagonal.
Solve the following system of equations.
Return ! if array element starts with a certain letter. Otherwise return ?
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