Casio ClassPad II Custom Commands

scalares(a, b)

• a, b are vectors

Returns the scalar resolute of a in the direction of b.

Example

Find \(\alpha\) for which the scalar resolute of \(3\boldsymbol{\hat{\imath}} + 2\boldsymbol{\hat{\jmath}} + \alpha\boldsymbol{\hat{k}}\) in the direction of \(4\boldsymbol{\hat{\imath}} - \boldsymbol{\hat{\jmath}} + \alpha^2 \boldsymbol{\hat{k}}\) equals \(\dfrac{74}{\sqrt{273}}\). (2016 Specialist Exam 2 Section A Question 11)

Contributed by Nhan