Recent content by urdsirdusrnam

Yes d1 was the distance from the point (-a,0) to a point in the curve P(x,y) and d2 is the distance from the point (a,0) to the same point. I could graph the curves only because I typed the equations on Wolfram. Is there any algebraic/geometric argument I could use to graph them without a...

This is from Spivak's Calculus. In an appendix, he defines polar coordinates. One of the exercises in this appendix is showing that the lemniscate, whose polar equation is: r^2=2(a^2)*cos(2theta) is the set of points P that satisfy that the product of the distances from said point to two...