Hi
could i get some help on this question please
i feel like I have done it before but not getting the answer
thank you!
Hey! For this question, simply use the distance formula to find the distance between the points
Where the eccentricity takes its usual form. You'll find that the distance between the point and the 'positive' foci is
and the distance between the point and the 'negative' foci is
Adding this up gives us the required relation, 2a.
Hi
Sorry and this question please
I feel like it is very physicsy (hhaha not a word)
thank you!
I'm not sure that this is really a maths question; I think it wants you to say that the beam of light will again go through the first foci? Presumably, EVERY bounce will lead the light to one of the foci. Nothing to solve here