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Chapter 4: Q 4.95 (page 451)

Evaluate the determinant 2−1−303−43−4−3by expanding by minors.

Short Answer

Expert verified

The value of the determinant is -11.

Step by step solution

01

Step 1. Given information

The given determinant is

2−1−303−43−4−3

02

Step 2. Calculation

Expand the determinant using second row.

Be careful with the signs

+-+-+-+-+-03-4-4-3+32-33-3-(-4)2-13-4=0+3(-6+9)+4(-8+3)=3(3)+4(-5)=9-20=-11

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