Question

The equation of the locus of a point which moves so that the sum of its distances from (3,0)(3,0) is:

• A. $20x^2+36y^2<405$
• B. $2x^2+36y^2>405$
• C. $36x^2+20y^2<405$
• D. $36x^2+20y^2>405$

Answer 1

The correct option is A $20x^2+36y^2<405$

√(h−3)2+k2+√(h+3)2+k2<9(h−3)2+k2−−−−−−−−−−√+(h+3)2+k2−−−−−−−−−−√<9