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March 31st, 2012, 07:22 PM   #1
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Complex numbers: Show that real part is -1

The complex number satisfies the equation Show that the real part of is .

What I did was:

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March 31st, 2012, 09:00 PM   #2
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Re: Complex numbers: Show that real part is -1

I'm afraid your attempt is only correct up to sixth step.
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March 31st, 2012, 09:47 PM   #3
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Re: Complex numbers: Show that real part is -1

Do you mean that I have expanded wrongly? I still can't spot the mistake.
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April 1st, 2012, 06:12 AM   #4
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Re: Complex numbers: Show that real part is -1

You have:



when you should have:

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April 1st, 2012, 09:23 AM   #5
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Re: Complex numbers: Show that real part is -1

[color=#000000]More simple,





.[/color]
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