Решите систему уравнений графическим способом:
1) x2-4x-2y-5=0,
xy+2=0
2) y-1,5-x+0,5x2=0,
2xy-5=0
1) x2-4x-2y-5=0,
xy+2=0
2) y-1,5-x+0,5x2=0,
2xy-5=0
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Answers & Comments
[{x/(y-x)}^(-2) - {(x+y)^2 - 4xy}/{x^2 -xy}}^2 * x^4/(x^2y^2-y^4) => (1) x/(y-x)}^(-2) = [(y-x)/x]^2 = (y-x)^2 / x^2 = (x-y)^2 / x^2 2) (x+y)^2 - 4xy = = x^2 + 2xy + y^2 - 4xy = x^2 - 2xy + y^2 = (x-y)^2 (3) (x-y...