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Question 1 By applying Kirchhoff's law and Ohm's law to a circuit, the following equations are obtained 31₁ 51₂ +313 = 7.5 21₁+1₂ 713 = -17.5 -10i₁ +4₂ +5i3 = 16

- where 1₁, 12 and is represent currents. By using the inverse matrix method, find their values. Confirm your calculations by using Cramer's rule and Gaussian Elimination.

Fig: 1