The value of $\frac{y_{1} y_{2} y_{3}}{(y_{1} - x_{1}) (y_{2} - x_{2}) (y_{3} - x_{3})}$ when $(x_{i}, y_{i}), i = 1, 2, 3$ Satisfy both $x^{3} - 3 x y^{2} = 2005 & y^{3} - 3 x^{2} y = 2004$ is

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

answer is 1002.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

$x^{3} - 3 x y^{2} = 2005 \Rightarrow [{(\frac{x}{y})}^{3} - 3 (\frac{x}{y}) = \frac{2005}{y^{3}}] \times 2004$ ……(1)
$y^{3} - 3 x^{2} y = 2004 \Rightarrow [1 - 3 {(\frac{x}{y})}^{2} = \frac{2004}{y^{3}}] \times 2005$ ….(2)
Subtract (1) & (2) & put $\frac{x}{y} = t$
$2004 t^{3} + 6015 t^{2} - 6012 t - 2005 = 0$ Question Image

$\frac{y_{1} . y_{2} . y_{2}}{(y_{1} - x_{1}) (y_{2} - x_{2}) (y_{3} - y_{3})} = \frac{1}{(1 - t_{1}) (1 - t_{2}) (1 - t_{3})}$ $= \frac{1}{1 + (t_{1} t_{2} + t_{2} t_{3} + t_{3} t_{1}) - (t_{1} + t_{2} + t_{3}) - t_{1} t_{2} t_{3}}$
Put values
=1002