Practice problem
Simplify the following for an arbitrary complex number z=a+biz=a+biz=a+bi: z+z‾z−z‾\frac{z+\overline{z}}{z-\overline{z}}z−zz+z
−1i-\frac{1}{i}−i1
bia\frac{bi}{a}abi
abi\frac{a}{bi}bia
Not enough information.
Type a concept, like “slope” or “photosynthesis”.
