Practice problem
For a complex number z=a+biz=a+biz=a+bi, determine: ∣z+z‾∣\lvert z+\overline{z}\rvert∣z+z∣
a2+b2a^2+b^2a2+b2
a2+b2\sqrt{a^2+b^2}a2+b2
∣2a∣|2a|∣2a∣
∣2b∣|2b|∣2b∣
Type a concept, like “slope” or “photosynthesis”.
