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- Question 3 & 4, Exercise 3.2
- s of $\vec{r},\vec{a}$ and $\vec{b}$ in the given equation. We get $$\hat{i}-9\hat{j}=p(\hat{i}+2\hat{j})+q(... mplies & x^2+4x-17=0\end{align} This is quadratic equation with $a=1$, $b=4$ and $c=-17$, so \begin{align}x&
- Question 12, 13 & 14, Exercise 3.2
- pha ^2}+\alpha -2=0.\end{align} This is quadratic equation in $\alpha $. $$a=1, \quad b=1,\quad c=-2$$ \beg