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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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    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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    However, thank you for your awnser.2012-07-29