7.determine a matriz B=(bij)⁴׳ em que bij 2+ i² +j?
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! b11 b12 b13 ! ! 4 5 6 !
! b21 b22 b23 ! = ! 7 8 9 !
! b31 b32 b33 ! ! 12 13 14 !
! b41 b42 43 ! ! 19 20 21!
b11= 2+1^2+1 = 2+1 +1 = 4 b12=2+1^2 +2=2+1+2= 2+1+ 2=5 b13= 2+1^2 +3 = 2+1+3 = 6 b21=2+2^2+1= 2+4+1 = 7 b22= 2+2^2+2=2+4+2=8 b23+ 2+2^2+3= 2+4+3= 9 b31= 2+3^2+1=2+9+1=12 b32= 2+3^2+2= 2+9+2 13 b33= 2+3^2+3=2+9+3=14 b41= 2+4^2+1= 2+16+1= 19 b42= 2+4^2+2=2+16+2=20 b43= 2+4^2+3= 2+16+3=21
! b21 b22 b23 ! = ! 7 8 9 !
! b31 b32 b33 ! ! 12 13 14 !
! b41 b42 43 ! ! 19 20 21!
b11= 2+1^2+1 = 2+1 +1 = 4 b12=2+1^2 +2=2+1+2= 2+1+ 2=5 b13= 2+1^2 +3 = 2+1+3 = 6 b21=2+2^2+1= 2+4+1 = 7 b22= 2+2^2+2=2+4+2=8 b23+ 2+2^2+3= 2+4+3= 9 b31= 2+3^2+1=2+9+1=12 b32= 2+3^2+2= 2+9+2 13 b33= 2+3^2+3=2+9+3=14 b41= 2+4^2+1= 2+16+1= 19 b42= 2+4^2+2=2+16+2=20 b43= 2+4^2+3= 2+16+3=21
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