How many integer solutions are there to the equation x1+x2+x3+ x4 25 subject to x; > i? Let y. X,-\, Yz=X=-2,43=X3-3, Yy= Xy•4. Then, x+%+Y3 + Yy = 15. %3D 15+4-1 18 こ 15 15

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A: Commutative property under addition.

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A: Use scalar multiplication of matrix and addition of matrix to simplify it.

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A:

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A: We have to solve    753-7862  6101-19×-8 9 7   5 0 3   4 0 5-9 1 3.

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A: To differentiate the following function.

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Q: A=[a,b;c,d]. A^2=[17,14;56,52].

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