Hi

I just have a quick question: how do I change x=1-y in to polar coordinates.

It is for an integration limit problem that I am working on.

Thanks

Nerdo

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- Nov 20th 2011, 12:48 PMnerdoCartesian to polar
Hi

I just have a quick question: how do I change x=1-y in to polar coordinates.

It is for an integration limit problem that I am working on.

Thanks

Nerdo - Nov 20th 2011, 12:53 PMQuackyRe: Cartesian to polar
Is there something stopping you from substituting in $\displaystyle x=r\cos\theta$ and $\displaystyle y=r\sin\theta$? Am I missing something?

- Nov 20th 2011, 12:57 PMnerdoRe: Cartesian to polar
- Nov 20th 2011, 01:07 PMQuackyRe: Cartesian to polar
It is possible, I think.

$\displaystyle \cos\theta{+}\sin\theta =\frac{1}{r}$

Squaring both sides gives:

$\displaystyle (\cos\theta{+}\sin\theta )^2=\frac{1}{r^2}$

$\displaystyle 1+\underbrace{2\sin\theta\cos\theta}=\frac{1}{r^2}$

Recognize this, at all? (Wink)

Edit: Corrected a mistake. - Nov 20th 2011, 01:09 PMQuackyRe: Cartesian to polar
I've just editted a mistake from the post above.