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OpenStudy (anonymous):
|dw:1332354283875:dw|
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myininaya (myininaya):
ialex sorry to say but your drawing isn't view-able.
OpenStudy (anonymous):
|dw:1332354540299:dw|
Directrix (directrix):
What is the conjugate of 9 - i ?
OpenStudy (anonymous):
3/9-i yes
Directrix (directrix):
No. Hint: The conjugate of a - bi is a + bi. So, the conjugate of 9 - 1i is ?
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OpenStudy (anonymous):
9-3i
Directrix (directrix):
The product of a number and its conjugate is a real number so no i terms are in the denominator. The numerator does not figure into the conjugate of 9 - i. The conjugate of 9 - i is 9 + 1 just as the conjugate definition states the conjugate of a + bi is a - bi.
Directrix (directrix):
|dw:1332356192346:dw|
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