Prove 1/x^2+1/xy+1/y^2=1 has no real solution

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In summary, the equation "1/x^2+1/xy+1/y^2=1" represents a quadratic equation in two variables with a constant term. To prove that it has no real solutions, we can use the discriminant, which will be less than zero. For example, substituting x=1 and y=2 shows that the equation does not have any real solutions. The equation can be graphed as a hyperbola, with a vertical and horizontal asymptote, further confirming the lack of real solutions. However, it can have complex solutions, with two complex solutions for every set of x and y values that satisfy the equation.
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$x,y\in N,\,\, and \,\,\dfrac {1}{x^2}+\dfrac{1}{xy}+\dfrac {1}{y^2}=1----(1)$

prove $(1)$ has no solution
 
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Albert said:
$x,y\in N,\,\, and \,\,\dfrac {1}{x^2}+\dfrac{1}{xy}+\dfrac {1}{y^2}=1----(1)$

prove $(1)$ has no solution

neither x nor y can be 1 as LHS >= 1.

so x , y >= 2 and for x = 2 , y =2 LHS = $\frac{3}{4}$ so LHS < 1 so cannot be 1 higeer x ,y lower is the value
 

FAQ: Prove 1/x^2+1/xy+1/y^2=1 has no real solution

What does the equation "1/x^2+1/xy+1/y^2=1" mean?

The equation "1/x^2+1/xy+1/y^2=1" is a mathematical expression that represents a relationship between three variables, x, y, and a constant value of 1. It is known as a quadratic equation in two variables with a constant term.

How can we prove that this equation has no real solutions?

To prove that the equation "1/x^2+1/xy+1/y^2=1" has no real solutions, we can use the discriminant, which is a mathematical tool used to determine the nature of the roots of a quadratic equation. In this case, the discriminant will be less than zero, indicating that the equation has no real solutions.

Can you provide an example to illustrate the lack of real solutions?

Yes, for example, if we substitute x=1 and y=2 into the equation "1/x^2+1/xy+1/y^2=1", we get 1/1+1/2+1/4=1, which simplifies to 3/4=1, which is not a true statement. This shows that the equation does not have any real solutions.

Is there a graphical representation of this equation?

Yes, the equation "1/x^2+1/xy+1/y^2=1" represents a conic section known as a hyperbola. It can be graphed on a coordinate plane and will have a vertical and horizontal asymptote, indicating that it does not intersect the x and y axes, further confirming the lack of real solutions.

Can this equation have complex solutions?

Yes, the equation "1/x^2+1/xy+1/y^2=1" can have complex solutions. In fact, it will have two complex solutions for every set of x and y values that satisfy the equation. This is due to the nature of quadratic equations and their solutions in the complex number system.

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