In Exercises 32-36, column
34. Let T : ℝn ⟶ ℝm be a linear transformation. Show that if T maps two linearly independent vectors onto a linearly dependent set, then the equation T(x) = 0 has a nontrivial solution. [Hint: Suppose u and v in ℝn are linearly independent and yet T(u) and T(v) are linearly dependent. Then c1T(u) + c2T(v) = 0 for some weights c1 and c2, not both zero. Use this equation.]
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