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- Question 1, Exercise 3.2
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- ec{b}|}$.
$ ====Solution====
Solve yourself.
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- Question 2, Exercise 3.2
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- }{2}\hat{j}$$ \\
Which is the unit vector.
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- Question 3 & 4, Exercise 3.2
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- t{21}\end{align}
Thus
$$x=-2\pm\sqrt{21}.$$
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- Question 5 & 6, Exercise 3.2
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- $
Hence coordinates of $D$ are $(-3,-2)$.
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- Question 7, Exercise 3.2
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- (1,-2,3)$.
====Solution====
Do yourself.
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- Question 7, Exercise 3.2
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- (1,-2,3)$.
====Solution====
Do yourself.
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- Question 9 & 10, Exercise 3.2
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- ghtarrow{OR}&=-3\hat{i}+3\hat{k}\end{align}
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- Question 11, Exercise 3.2
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- ghtarrow{OK}&=6\hat{i}+17\hat{j}\end{align}
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- Question 12, 13 & 14, Exercise 3.2
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- w{AB}\,\,\parallel \,\,\overrightarrow{CD}.$$
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- Question 1, Exercise 3.3
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- c{a}-\vec{b}) \cdot \vec{c}&=-11\end{align}.
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- Question 2 and 3 Exercise 3.3
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- 99^{\circ}\text{(approximately)}\end{align}
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- Question 4 and 5 Exercise 3.3
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- endicular to both $\vec{a}$ and $\vec{b}$.
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- Question 6 Exercise 3.3
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-
\Rightarrow m&=\dfrac{27}{38} \end{align}
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- Question 7 & 8 Exercise 3.3
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- |}=\dfrac{1}{2.1}=\dfrac{1}{2} \text {. }$$
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- Question 9 & 10, Exercise 3.3
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- W&=14-3+1=12 \text { units. }\end{align}
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- Question 11, Exercise 3.3
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- Question 12 & 13, Exercise 3.3
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- Question 1 Exercise 3.4
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- Question 2 Exercise 3.4
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- Question 3 Exercise 3.4
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- Question 4 Exercise 3.4
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- Question 5 Exercise 3.4
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- Question 6 Exercise 3.4
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- Question 7 & 8 Exercise 3.4
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- Question 9 Exercise 3.4
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- Question 1 & 2 Exercise 3.5
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- Question 3 & 4 Exercise 3.5
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- Question 5(i) & 5(ii) Exercise 3.5
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- Question 5(iii) & 5(iv) Exercise 3.5
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- Question 6 Exercise 3.5
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- Question 7 Exercise 3.5
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- Question 8 Exercise 3.5
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- Question 9 Exercise 3.5
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- Question 1 Review Exercise 3
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- Question 2 & 3 Review Exercise 3
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- Question 4 & 5 Review Exercise 3
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- Question 6 & 7 Review Exercise 3
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- Question 8 & 9 Review Exercise 3
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- Question 10 Review Exercise 3
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