Дано
$$x^{2} + y^{2} = 15$$
___ ___
/ x / y
/ – + / – = 5/2
/ y / x
$$sqrt{frac{y}{x}} + sqrt{frac{x}{y}} = frac{5}{2}$$
Ответ
$$x_{1} = – frac{4 sqrt{255}}{17}$$
=
$$- frac{4 sqrt{255}}{17}$$
=
=
$$- frac{4 sqrt{255}}{17}$$
=
-3.75734574651090
$$y_{1} = – frac{sqrt{255}}{17}$$
=
$$- frac{sqrt{255}}{17}$$
=
-0.939336436627724
$$x_{2} = – frac{sqrt{255}}{17}$$
=
$$- frac{sqrt{255}}{17}$$
=
=
$$- frac{sqrt{255}}{17}$$
=
-0.939336436627724
$$y_{2} = – frac{4 sqrt{255}}{17}$$
=
$$- frac{4 sqrt{255}}{17}$$
=
-3.75734574651090
$$x_{3} = frac{sqrt{255}}{17}$$
=
$$frac{sqrt{255}}{17}$$
=
=
$$frac{sqrt{255}}{17}$$
=
0.939336436627724
$$y_{3} = frac{4 sqrt{255}}{17}$$
=
$$frac{4 sqrt{255}}{17}$$
=
3.75734574651090
$$x_{4} = frac{4 sqrt{255}}{17}$$
=
$$frac{4 sqrt{255}}{17}$$
=
=
$$frac{4 sqrt{255}}{17}$$
=
3.75734574651090
$$y_{4} = frac{sqrt{255}}{17}$$
=
$$frac{sqrt{255}}{17}$$
=
0.939336436627724
Численный ответ
x1 = -3.757345746510897
y1 = -0.9393364366277242
x2 = 0.9393364366277242
y2 = 3.757345746510897