SOLUTION: Subscript notation is frequently used for working with larger systems of equations. Use a matrix approach to solve the system. Express the solutions as 4-tuples of the form (x1,

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Question 1122869: Subscript notation is frequently used for working with larger systems of equations. Use a matrix approach to solve the system. Express the solutions as 4-tuples of the form
(x1, x2, x3, x4).

x1 + 3x2 − x3 + 2x4 = −9
2x1 + 7x2 + 2x3 − x4 = 44
−3x1 − 8x2 + 3x3 + x4 = −7
4x1 + 11x2 − 2x3 − 3x4 = 36


Answer by ikleyn(52794) About Me  (Show Source):
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