For input vector x, write a function to check whether there exists exactly 4 elements in x which are divisible by 3.
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- Write a function to print all the positive numbers for any given 1D vector. HINT: If vector is [0, -1, -2, 3, 9, -12, 6], your output must be as follows, 0 is positive3 is positive 9 is positive 6 is positive7. If A has n elements and B has m elements(n, m ∈ N),find the number of functions from A to B.Write a function that calculates the mean of the input vector? Solution by Matlab
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