(a) (₁, ₂) (b) (r1,73) (c) (r2,73) r₁= [3 -1 0], (d) r1 xr2 (e) ri Xr3 (f) r₂ × 3 r₂ = [-2 0 1], T3 = [1 -2 4]. (g) What is the area of the parallelogram formed by r₁ and r₂? (h) What is the area of the parallelogram formed by r₁ and r3? (i) What is the area of the parallelogram formed by r2 and r3? (j) What is the volume of the parallelepiped formed by r₁, 72, and r3?

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