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Chapter 10: Q. 455 (page 777)

Read the section and make your own summary
of the material.
What is $2 + 8 ?$ How?

Short Answer

Expert verified

The solution is $10 .$

Step by step solution

01

Part (a) Step 1. Caluclation

Given: $2 + 8$

The distance between two distinct

points can be zero.

02

Part (b) Step 1. Calculation

We have,

$2 + 8 \Rightarrow 2 + 8 = 10$

The solution is $10 .$

03

Part (c) Step 1. Calculation

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Most popular questions from this chapter

Find $u + v$ and $u - v$ . Also, sketch $u, v, u + v$ and $u - v$ .

role="math" localid="1649572653771" $u = (2, - 6), v = (6, 2)$ ,

Find a vector of length 3 that points in the direction opposite to $<1, - 2, 3>$ .

Find $u + v a n d u - v$ also sketch $u, v, u + v, u - v$

role="math" localid="1649603034674" $u = (1, - 4, 6) a n d v = (2, - 4, 7)$

Give an example of three nonzero vectors u, v and w in $ℝ^{3}$ such that $u \times v = u \times w$ but $v \neq w$ . What geometric relationship must the three vectors have for this to happen?

What is meant by the triangle determined by vectors u and v in $ℝ^{3}$ ? How do you find the area of this triangle?

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