The complex conjugate of \(3+4i\) is \(3-4i\).
\(3+4i\) 的复共轭是 \(3-4i\)。
To compute the modulus, we multiply \(z\) by its complex conjugate so that \(z\overline{z}=a^2+b^2\) becomes a real number.
为计算模长,我们将 \(z\) 与其复共轭相乘,使 \(z\overline{z}=a^2+b^2\) 变成实数。