Solveeit Logo

Question

Question: If (mi, 1/mi), i = 1, 2, 3, 4 are four distinct points on a circle then m<sub>1</sub>. m<sub>2</sub>...

If (mi, 1/mi), i = 1, 2, 3, 4 are four distinct points on a circle then m1. m2. m3. m4 =

A

0

B

1

C

–1

D

–2

Answer

1

Explanation

Solution

Let circle be x2 + y2 + 2gx + 2fy + c = 0

Putting (mi, 1/mi)

mi2 + 1mi2\frac { 1 } { \mathrm { mi } ^ { 2 } }+ 2gmi + + c = 0

Ю mi4 + 2gmi3 + cmi2 + 2f mi + 1 = 0

Ю m1, m2, m3, m4

Product of roots = 1