Question

If x² + y² = t + `1/"t"` and x⁴ + y⁴ = t² + `1/"t"^2` then `("d"y)/("d"x)` = ______

विकल्प

• `x/(2y)`

• `(-y)/x`

• `(-x)/(2y)`

• `y/x`

Answer 1

`(-y)/x`