Question: write a function that computes the magnitude of a vector...

Write a function that computes the magnitude of a vector x. If x has a complex component, then display the message “A complex value has been encountered” and return without computing the magnitude. Recall that the magnitude of a vector of length n is given by:√𝑥1 2 + 𝑥2 2 + ⋯ + 𝑥𝑛 2 . Also, the isreal command (learn about it using Matlab’s help utility) may be used.