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 March 28th, 2013, 04:21 AM #1 Member   Joined: Nov 2012 Posts: 61 Thanks: 0 independent of A Show that $3(sin A - cos A)^2$ + $6(sin A + cos A)^{2}$ + $4(sin^{6}A$+$cos ^{6}A$) is independent of A
 March 28th, 2013, 04:30 AM #2 Member   Joined: Nov 2012 Posts: 61 Thanks: 0 Re: independent of A Can anyone tell me how to use LaTex
 March 28th, 2013, 04:40 AM #3 Senior Member   Joined: Feb 2013 Posts: 281 Thanks: 0 Re: independent of A latex button and then latex format for example if you type this: Code: $x^2 + \sqrt(x)$ you get this: $x^2 + \sqrt{x}$
 March 28th, 2013, 04:46 AM #4 Member   Joined: Nov 2012 Posts: 61 Thanks: 0 Re: independent of A Thank you. Can you suggest some site for it?
 March 28th, 2013, 06:11 AM #5 Senior Member   Joined: Feb 2013 Posts: 281 Thanks: 0 Re: independent of A Sure. https://google.com
March 28th, 2013, 06:48 AM   #6
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Re: independent of A

Quote:
 Originally Posted by rakmo Show that $3(sin A - cos A)^2$ + $6(sin A + cos A)^{2}$ + $4(sin^{6}A$+$cos ^{6}A$) is independent of A
[color=#000000]This is wrong.....it is dependent on A. If $f(A)=3(sin A - cos A)^2+6(sin A + cos A)^{2}+4(sin^{6}(A)+cos ^{6}(A))$, f(0)=13 and f(3?/4)=7.[/color]

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