(a) Find the basis for the solution space of I1 +a2 - a3 = 0, -2.r1 - 12 + 5rz = 0, -21 + 4r3 = 0 and find the dimension of that space as well. (b) Using the answer in part (a) find the Rank(A), where 1 1 -1 A = -2 -1 -1 4 and verify Dimension Theorem.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.