<div dir="ltr"><div> In your last equation, if you remove x and y from theta, what's the same value you will add?</div><div> </div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Apr 30, 2013 at 5:36 AM, alaamegawer <span dir="ltr"><<a href="mailto:alaamegawer@yahoo.com" target="_blank">alaamegawer@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">thanks Yixun<br>
<br>
yes i know transformation and theta ,but that was n't my question. i have a<br>
mistake in derivation and this mistake lead to make me add the same value to<br>
x and y and i don't know it<br>
<br>
<br>
<br>
--<br>
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