In Exercises 25-28, determine if the specified linear transformation is (a) one-to-one and (b) onto. Justify each answer.
26. The transformation in Exercise 2
In Exercises 1-10, assume that T is a linear transformation. Find the standard matrix of T.
2. T : ℝ3 → ℝ2, T(e1) = (1, 3), T(e2) = (4, −7), and T(e3) = (−5, 4), where e1, e2, e3 are the columns of the 3 × 3 identity matrix.
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