Chapter 12.3, Problem 48E

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8th Edition

James Stewart

ISBN: 9781305266643

Textbook Problem

Suppose that **a** and **b** are nonzero vectors.

(a) Under what circumstances is comp** _{a} b** = comp

(b) Under what circumstances is proj** _{a} b** = prpj

(a)

To determine

**To find:** Under what circumstances is

Explanation

**Given:**

**Formula:**

Write the expression for the scalar projection of **b** onto **a**.

Rearrange equation (2), for scalar projection of **a** onto **b**.

In equation (1), substitute

(b)

To determine

**To find:** Under what circumstances is

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