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Cussions 6 0! 1 8 Wiuli % St U - 3,75" 1 1 1 1 1 VL Oete"Rouna testa1 1 sel ists J5 hypatheses Homework: HW 1 decma e anquake 1 1 Chapter SJULSILVLS L 1 3...

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Cussions 6 0! 1 8 Wiuli % St U - 3,75" 1 1 1 1 1 VL Oete"Rouna testa1 1 sel ists J5 hypatheses Homework: HW 1 decma e anquake 1 1 Chapter SJULSILVLS L 1 3 SECTION Roz . Homework 2018 1 M0 U40 01Type [ hete 11 1 2 1 1

cussions 6 0! 1 8 Wiuli % St U - 3,75" 1 1 1 1 1 VL Oete"Rouna testa1 1 sel ists J5 hypatheses Homework: HW 1 decma e anquake 1 1 Chapter SJULSILVLS L 1 3 SECTION Roz . Homework 2018 1 M0 U40 01 Type [ hete 1 1 1 2 1 1



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Exer $1-8:$ Find, if possible, $A+B, A-B, 2 A,$ and $-3 B$ $$A=\left[\begin{array}{rr} 6 & -1 \\ 2 & 0 \\ -3 & 4 \end{array}\right], \quad B=\left[\begin{array}{rr} 3 & 1 \\ -1 & 5 \\ 6 & 0 \end{array}\right]$$

The problem we're told the matrix A. Is equal The 3 -22 zero on negative four. And negative three to negative form. And the Matrix B is a matrix 40 two negative one negative 13 Now first we want to find A plus B. Now in order to add two matrices they must have the exact same dimensions. Well a is a three x 3 makers But B is a three x 2. And so that means that this is not possible because they don't have the same dimensions. Yeah. We also want to find A minus B. Yeah this is something else that we can't do because these don't have the same dimensions. And so this is still not possible. Yeah. Now we can find to A to A. Just means take everything in A. And multiply it by two. So that top probably six. And then get a 44 Than 0 to -8. The -6 4 -2. Yeah. And then lastly we want negative three B. And so it just means to take everything and be And multiply it by -3. That's 1912 0. Then you have 63 3 -9. So that's our matrix -3 B.


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