Question: I only need help with part 2 (ii). Can someone help me solve this using R? Solve the following systems of linear equations (i) by

I only need help with part 2 (ii). Can someone help me solve this using R?

Solve the following systems of linear equations (i) by hand (using back-substitution, Gaussian elimination, or what- ever method you like); (ii) with R by setting A to the coefficient matrix, x to the variable vector, and b to the vector of constants. Use the fact that Ax = b implies x = A-1b if A is nonsingular. What's going on with case (c)? (a) 201+ 302 = 4 21 - 4202 = -9 (b) 2 1+ 2x2+ 323 = 7 21 - 22+ 4x3 = -3 -21+402 + 23 = ( (c) 2 1+ 22 + 323 = 7 21 - 2 + 4203 = -3 3x1+ 22+7203 = 4

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