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chemistryboi
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- 31-10-2015 10:34
Last edited by chemistryboi; 31-10-2015 at 11:22. -
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- 31-10-2015 10:36
(Original post by chemistryboi)
another method that is more efficientLast edited by ghostwalker; 31-10-2015 at 10:37. -
chemistryboi
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- 31-10-2015 10:42
(Original post by ghostwalker)
Consider the arg of 1+i, and what happens when you to the arg when you raise the number to the power of 4. -
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- 31-10-2015 10:45
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chemistryboi
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- 31-10-2015 10:49
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- 31-10-2015 10:59
(Original post by chemistryboi)
I have not come across that format, my understanding of the argument is the angle (usually called theta) in radians measured anticlockwise from y=0 to the line ZHow about the
format, and what happens when you raise it to a power?
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- 31-10-2015 11:07
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Razzamataz179
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- 31-10-2015 11:13
(Original post by chemistryboi)
Hi TSR
hence show that ((2+3i)/(5+i))^4 is real and determine its value. -
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- 31-10-2015 11:16
(Original post by chemistryboi)
I don't know where I have gotten this idea from but does it rotate? As in change quadrant but with a different angle
But since you've not come across these format yet (they are covered at A-level). I suggest substitute your expression, and square it, and square it again, to get the fourth power. After the first squaring, it will be a simpler format.
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chemistryboi
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- 31-10-2015 11:21
(Original post by ghostwalker)
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