Mathematics

Mathematics

Problem

For a non-zero vector a\mathbf{a}, the set of real numbers satisfying ∣(5−x)a∣<∣2a∣|(5-x)\mathbf{a}| < |2\mathbf{a}| consists of all xx such that a. 0<x<30 < x < 3 b. 3<x<73 < x < 7 c. −7<x<−3-7 < x < -3 d. −7<x<3-7 < x < 3

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