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\begin{align*} x &= \frac 12 js + \frac 12 is \\\ y &= \frac 14 is - \frac 14 js \end{align*}

How can I find a \begin{align*} i &= \\\ j &= \end{align*} conversion of this?

Edit:

I am not happy with the moderaters assumption on my syntax.

x = (j * s / 2) + (i * s / 2) y = (i * s / 4) - (j * s / 4) 

is the proper format.

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    See http://en.wikipedia.org/wiki/System_of_linear_equations.2012-07-28
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    SimpleRookie, `x = (j * s / 2) + (i * s / 2)` is *exactly* the same as $x = \frac{js}{2} + \frac{is}{2}.$2012-07-29
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    Tell that to notepad.2012-08-01

1 Answers 1

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Looking at the two equations, they look pretty damn similar. There must some relationships between $x$ and $2y$. Calculate $x+2y$ and $x-2y$:

$$x+2y=is$$ $$x-2y=js$$

And you have $i$ and $j$. It's easy to take if from here.

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    I'm sorry, I'm not a math fellow. The syntax is specific, but was edited by presumptuous moderators. As I am finding common on the stack sites. Mod's who think they know the posters intentions.2012-07-29
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    However, thank you for your awnser.2012-07-29