Determinants

Find the determinant of the following matrix.

• 129

• -129

• 81

• -81

Find the determinant of the following matrix.

• -41

• 71

• 41

• -53

What size is this matrix?

• 2x2

• 2x3

• 3x2

• 1x6

find: B*A

• 47     30
  9     5
• 17     15
  42     35
• 10     25
  7     1
• not possible because rows do not match columns

What is the formula for the determinant of a 2x2 matrix?

• ad-bc

• ab-cd

• ad+bc

• (a+d)(b+c)

Find the inverse of the matrix.

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• 
• 
• No Inverse Exists

Which option below correctly shows the steps to find the inverse of this matrix?

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• 
• 
• No Inverse Exists

If A and B are invertible matrix then (AB)^-1 =

• A^-1B^-1

• AB

• B^-1A^-1

• none of these

If |A| = 0, then A is

• zero matrix

• singular matrix

• non-singular matrix

• Identity matrix

Bonus Point! 3A=?

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