What is the output of the following MATLAB code?

medium📝 Predict Output Q4 of 15

MATLAB - Numerical Methods

p = [1 -6 11 -6];
r = roots(p);
disp(sort(r'));

A[0 0 0]

B[1 2 3]

C[1 -6 11]

D[6 11 6]

Step-by-Step Solution

Solution:

Step 1: Identify polynomial and find roots
The polynomial is x^3 - 6x^2 + 11x - 6, which factors as (x-1)(x-2)(x-3).
Step 2: roots(p) returns roots and sort displays them sorted
The roots are 1, 2, and 3, displayed as a row vector.
Final Answer:
[1 2 3] -> Option B
Quick Check:
roots of polynomial = [1 2 3] [OK]

Quick Trick: roots() returns polynomial zeros, sort for order [OK]

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