2007-10-13 06:45:16 · 4 answers · asked by Patrick Star 1 in Science & Mathematics ➔ Mathematics
a+bi is a complex number.
a and b are both real.
i = sqrt(-1) which is imaginary.
If b = 0, then we have a real number
If a = 0 then we have a pure imaginary number
If both a and b not = 0, then we have a complex number
a-bi is called the conjugate of a+bi
(a+bi)(a-bi) = a^2 +b^2
2007-10-13 07:06:50 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋
a+bi is not the definition itself. The definition of a complex number comes from â-1=i.
and a+bi is the form of any complex number where a is the real part and bi is the imaginary part.
2007-10-13 13:56:16 · answer #2 · answered by tootoot 3 · 0⤊ 0⤋
Yup. Any "bi" by itself is an imaginary number, and the addition of a real "a + bi" makes it complex.
2007-10-13 13:53:17 · answer #3 · answered by Louise 5 · 0⤊ 0⤋
yes, where i = sqrt(-1)
2007-10-13 13:52:36 · answer #4 · answered by ib 4 · 0⤊ 0⤋