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Definition | ![]() |
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z1· z2 | = | (2· 4 - 3· 5) + (2· 5+ 4· 3)i |
= | -7 + 22i. |
z1· z2 | = | (2+3i)· ( 4+5i) |
= | 2· 4 + 2· 5i + 3i· 4 + 3i· 5i | |
= | 8 + 10i +12i + 15· i2 | |
= | 8 + 22i + 15· (-1) | |
= | -7 + 22i. |
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i0 = 1 | i4 = 1 | i8 = 1 |
i1 = i | i5 = i | i9 = i |
i2 = -1 | i6 = - 1 | i10 = -1 |
i3 = -i | i7 = -i | i11 = -i |
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