How do you convert 1=(-2x-3)^2+(y+1)^21=(2x3)2+(y+1)2 into polar form?

1 Answer
Feb 10, 2017

4(r cos theta + 3/2)^2+(rsintheta+1)^2=14(rcosθ+32)2+(rsinθ+1)2=1.

Explanation:

graph{(2x+3)^2+(y+1)^2-1=0 [-3, 3, -3, 0]}

The equation has the standard form

(x+3/2)^2/(1/2)^2+(Y+1)^2/1^2=1(x+32)2(12)2+(Y+1)212=1 that represents the ellipse, with

center C(-3/2, -1)C(32,1), major axis along x =-3/2x=32, minor axis

along y = -1y=1, semi major axis a = 1,, semi minor axis b = 1/2b=12 and eccentricity e= sqrt(1-b^2/a^2)=sqrt3/2.e=1b2a2=32.

The conversion formula is ( x, y ) = r ( cos theta, r sin theta )(x,y)=r(cosθ,rsinθ).

So, the polar equation is

4(r cos theta + 3/2)^2+(rsintheta+1)^2=14(rcosθ+32)2+(rsinθ+1)2=1.