If $a$ is a complex number and $b$ is a real number, then the equation $\bar{a}+a+b=0$ represents $a$
If $a$ is a complex number and $b$ is a real number, then the equation $\bar{a}+a+b=0$ represents $a$
- straight line
- parabola
- circle
- hyperbola
Solution
Let $a=x+i y$, then $\bar{a}=x-i y$
Thus,
$\bar{a}+a+b=0$
$\begin{aligned} \Rightarrow & x-i y+x+i y+b & =0 \\ \Rightarrow & 2 x+b & =0 \\ \Rightarrow & x+\frac{b}{2} & =0\end{aligned}$
Which represent a straight line.
Asked in: AP EAMCET 2001
Practice more Complex Number questions on Aicharya