Basic Properties of Complex Numbers
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Physics/수리물리
Complex NumberDefinition 1. A complex number is an ordered pair of two real numbers, $(a, b)$. We define addition of two complex numbers $z_1 = (x_1, y_1), z_2 = (x_2, y_2)$ as $z_1 + z_2 = (x_1, y_1) + (x_2, y_2) = (x_1 + x_2, y_1 + y_2)$, and also define multiplication as $z_1z_2 = (x_1, y_1) \cdot (x_2, y_2) = (x_1x_2 - y_1y_2, x_1y_2 + x_2y_1)$. Let Define $i$ by $i = (0, 1)$. Note that $i^2..