For a non-zero vector

MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

For a non-zero vector p\mathbf{p}, which expression gives a unit vector opposite in direction to p\mathbf{p}? (a) −p∣p∣2-\dfrac{\mathbf{p}}{|\mathbf{p}|^{2}} (b) p∣p∣\dfrac{\mathbf{p}}{|\mathbf{p}|} (c) −p∣p∣-\dfrac{\mathbf{p}}{|\mathbf{p}|} (d) −p-\mathbf{p}

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