You are testing an electrical device which can be modelled by the following equations: 1₁ + 2(1₁ −1₂) + 4(1₁ − 1₂) = 4 312 + 4(1₂-13) + 7 + 2(1₂−1₁) + 3(1₂-4₁) = 0 31₂-5+2(1₁ - 1₂) = 0 (1-a) Rearrange the above three equations into a standard form. (1-b) Find I1, I2, and I3 using the Gaussian elimination method. (1-c) Find 11, 12, and 13 using the inverse matrix method.

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A: Disclaimer: Since you have posted a question with multiple sub-parts, we will solve first three…

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A: The detailed solution of the problem is given in the next steps.

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A: Explanation of the answer is as follows

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A: Using simplification method

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Q: Convert the equation from Standard to General form x2 + (y + 4)² = 26 O x2 + y? + 4y +26 = 0 O x2 +…

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