Mathematics

Problem

Identify the correct expression for the scalar projection of vector

\mathbf{a}

on vector

\mathbf{b}

. a)

\dfrac{\mathbf a\cdot\mathbf b}{|\mathbf a|\,|\mathbf b|}

\dfrac{\mathbf a\cdot\mathbf b}{|\mathbf a|}

\dfrac{\mathbf a\cdot\mathbf b}{|\mathbf b|}

\dfrac{\mathbf a\cdot\mathbf b}{|\mathbf b|^{2}}