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Chapter 9: Q. 42 (page 603)

Find each quantity if $v = 3 i - 5 j$ and $w = - 2 i + 3 j$ .
$3 v - 2 w$

Short Answer

Expert verified

The value of $3 v - 2 w$ when $v = 3 i - 5 j$ and $w = - 2 i + 3 j$ is $13 i - 21 j$

Step by step solution

Step 1. Given data

$v = 3 i - 5 j$ and $w = - 2 i + 3 j$

Step 2. Find the exact valueSubstitute the values of v and w in the equation

$3 v - 2 w = 3 (3 i - 5 j) - 2 (- 2 i + 3 j)$

$3 v - 2 w = 9 i - 15 j + 4 i - 6 j$

$3 v - 2 w = 13 i - 21 j$

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Find each quantity if $v = 3 i - 5 j$ and $w = - 2 i + 3 j$ .
$3 v - 2 w$

Short Answer

Step by step solution

Step 1. Given data

Step 2. Find the exact valueSubstitute the values of v and w in the equation

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Most popular questions from this chapter

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Find each quantity if v=3i-5jand w=-2i+3j.3v-2w

Short Answer

Step by step solution

Step 1. Given data

Step 2. Find the exact valueSubstitute the values of v and w in the equation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Probability and Statistics

Mechanics Maths

Applied Mathematics

Discrete Mathematics

Calculus

Pure Maths

Study anywhere. Anytime. Across all devices.

Find each quantity if $v = 3 i - 5 j$ and $w = - 2 i + 3 j$ .
$3 v - 2 w$