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Question 9 & 10, Exercise 3.2

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overrightarrow{c}$is \\ \begin{align}6\hat{a}&=6[\frac{1}{3}(\hat{i}-2\hat{j}+2\hat{k})]\\ &=2(\hat{i}-

Question 2 Exercise 3.4

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56}}\\ \Rightarrow \quad \theta&=\cos ^{-1}\left(\frac{-28}{2 \sqrt{14} \sqrt{14}}\right) \\ \Rightarrow

Question 8 Exercise 3.5

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]\\ & =\dfrac{1}{6}[ 27-30-2]\\ & \Rightarrow V=-\frac{5}{6} \text { units. } \end{align} Volume can not