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Maths Question

[Deleted User] · 2008-11-09 20:48:32

Just a quick question, I've completely forgotten: Is, 1 + 4sin^2 x the same as (1 +2sinx)^2 Thanks!

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09-11-2008 9:48pm

#1

[Deleted User]
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Just a quick question, I've completely forgotten:

Is, 1 + 4sin^2 x the same as (1 +2sinx)^2

Thanks!

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#2 09-11-2008 9:50pm
Podge_irl

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No.
(1 + 2sinx)^2 = (1 + 2sinx)(1 + 2sinx) = 1 + 4sinx + 4(sinx)^2

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#3 09-11-2008 9:51pm
[Deleted User]
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Podge_irl wrote: »

No.
(1 + 2sinx)^2 = (1 + 2sinx)(1 + 2sinx) = 1 + 4sinx + 4(sinx)^2

Ah yah I see now, thanks a million podge!

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#4 11-11-2008 11:20pm
howtobeknown

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yea its multiplied by itself

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