give answer of 2 and 3 questions
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2) 4 elements then 2*2
8 elements then 2*4,4*2
3) a11=2*1-1
=2-1
=1
a12=2*1-2
=2-2
=0
a21=2*1-1
=2-1
=1
a22=2*2-2
=4-2
=2
2) a11=1*1=1
a12=1*2=2
a21=2*1=2
a22=2*2=4
8 elements then 2*4,4*2
3) a11=2*1-1
=2-1
=1
a12=2*1-2
=2-2
=0
a21=2*1-1
=2-1
=1
a22=2*2-2
=4-2
=2
2) a11=1*1=1
a12=1*2=2
a21=2*1=2
a22=2*2=4
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