What will MATLAB display after running this code?

medium📝 Predict Output Q5 of 15

MATLAB - Linear Algebra

M = [1 2 3; 0 4 5; 1 0 6];
detM = det(M);
detM

A12

B22

Step-by-Step Solution

Solution:

Step 1: Calculate determinant of 3x3 matrix M
Using expansion or MATLAB det function, det(M) = 1*(4*6 - 5*0) - 2*(0*6 - 5*1) + 3*(0*0 - 4*1) = 1*24 - 2*(-5) + 3*(-4) = 24 + 10 - 12 = 22.
Step 2: Output the determinant value
Variable detM holds 22, so MATLAB displays 22.
Final Answer:
22 -> Option B
Quick Check:
det(M) = 22 [OK]

Quick Trick: Use cofactor expansion for 3x3 determinant [OK]

Common Mistakes:

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