Identify the correct expression for the scalar projection of vector on vector .

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

Problem

Identify the correct expression for the scalar projection of vector a\mathbf{a} on vector b\mathbf{b}. (a) a⋅b∣a∣ ∣b∣\dfrac{\mathbf a\cdot\mathbf b}{|\mathbf a|\,|\mathbf b|} (b) a⋅b∣a∣\dfrac{\mathbf a\cdot\mathbf b}{|\mathbf a|} (c) a⋅b∣b∣\dfrac{\mathbf a\cdot\mathbf b}{|\mathbf b|} (d) a⋅b∣b∣2\dfrac{\mathbf a\cdot\mathbf b}{|\mathbf b|^{2}}

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