1. For each of the following linear transformations, determine whether it is onto. a. T(x1, x2,...

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1. For each of the following linear transformations, determine whether it is onto. a. T(x1, x2, x3) = (2x1 – 2x2 + x3,3x1 – 2x2 + x3, x1 + 2x2 - 4.x3, 2x1 – 3x2 + 2x3). 1. For each of the following linear transformations, determine whether it is onto. a. T(x1, x2, x3) = (2x1 – 2x2 + x3,3x1 – 2x2 + x3, x1 + 2x2 - 4.x3, 2x1 – 3x2 + 2x3).