Write a function in Matlab that takes as input s and a number x and outputs the

Question

Write a function in Matlab that takes as input s and a number x and outputs the floating point number of x using s-digit rounding. You may use Matlab’s “round” command to help you. Use only basic programming.

(a) Write out or print out your function

(b) Choose 2 random vectors of length 10, using the “rand” command, and compute the result of the dot product using your function under 4-digit rounding and compute the exact Matlab result and compute the absolute error. Do the same thing 4 more times and turn in the results.

Explanation / Answer

function [m,s] = stat2(x) n = length(x); m = avg(x,n); s = sqrt(sum((x-m).^2/n)); end function m = avg(x,n) m = sum(x)/n; rand();n end

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