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unit 1

Total questions: 2

Worksheet time: 4mins

Name
Class
Date
1.
a)

ddfdf

b)

fdd

c)

sfdf

d)

dfdf

2.

Which one is incorrect

a)

∣A−1∣ =1∣A∣\left|A^{-1}\right|\ =\frac{1}{\left|A\right|}  

b)

(AT)−1 =(A−1)T\left(A^T\right)^{-1}\ =\left(A^{-1}\right)^T  

c)

(λA)−1=λA−1\left(\lambda A\right)^{-1}=\lambda A^{-1}  

d)

(A−1)−1=A\left(A^{-1}\right)^{-1}=A