Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN: 9780134463216
Author: Robert F. Blitzer
Publisher: PEARSON
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Pleasantly, when we multiply a complex number z = a + bi by its complex conjugate z, we get a real number which
might be called the quadrance or modulus squared of z, namely
zz = Q (2) = a² +6² = |z|2.
So to simplify a quotient like
1+4 i
5-3 i'
we multiply both numerator and denominator by the complex conjugate of the
bottom, namely 5 – 3 i :
5+3*1
Note: enter the complex number a + ib use the Maple syntax a+b*I.
This then gives us
(1+4 i)(5–3 i)
1+4i
5-3 i
-734
+i| 2334
|
(5–3 i)(5–3 i)
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Transcribed Image Text:Pleasantly, when we multiply a complex number z = a + bi by its complex conjugate z, we get a real number which might be called the quadrance or modulus squared of z, namely zz = Q (2) = a² +6² = |z|2. So to simplify a quotient like 1+4 i 5-3 i' we multiply both numerator and denominator by the complex conjugate of the bottom, namely 5 – 3 i : 5+3*1 Note: enter the complex number a + ib use the Maple syntax a+b*I. This then gives us (1+4 i)(5–3 i) 1+4i 5-3 i -734 +i| 2334 | (5–3 i)(5–3 i)
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