If , and then and are…

MATHEMATICS · Single correct · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

H \equiv \frac{x^2}{a^2} - \frac{y^2}{b^2} - 1 = 0

C \equiv \frac{x^2}{a^2} - \frac{y^2}{b^2} + 1 = 0

and

A \equiv \frac{x^2}{a^2} - \frac{y^2}{b^2} = 0

then

H, A

and

C

are in (1) AP (2) GP (3) HP (4) AGP