system of equations.

\textbf{Solve System of Equations: }$\\\\\left\{\begin{matrix} \mathbf{\sqrt{x^2+y^2}=z+1} \\\\ \mathbf{\sqrt{y^2+z^2}=x+1} \\\\ \mathbf{\sqrt{z^2+x^2}=y+1} \end{matrix}\right;\mathbf{x.y,z\in\mathbb{R}} .

6 Answers

106
Asish Mahapatra ·

x = 2√2 + 13 = z
y = 1 + √23
confirm please

1708
man111 singh ·

Yes Ashish I have also got

\mathbf{(x-z).(x+z+1)=0}

262
Aditya Bhutra ·

what about x=y=z=√2 +1

106
Asish Mahapatra ·

yeah there's more

x=y=0, z = -1
or
y=z=0, x = -1
or
x=z=0, y = -1

21
Shubhodip ·

continuing after man111

since the system of eq is symmetric/cyclic , we have

(x-z)(x+y+1) = 0

(y-z)(y+z+1) = 0

(x-y)(x+y+1)= 0

solutions can be broadly classified into three sets

1) x=y=z(we will get aditya's answers )

2) any two are equal, we can solve easily (we will get all the answers given by ashish)

3) none are equal. that gives us x+y+1 = 0, y+z+1 = 0 and x+z+1 = 0,which gives x=y=z whih is absurd. because we are considering none of them are equal.

1708
man111 singh ·

Thanks Shubhodip.

Speciallly for nice symmetric/cyclic approach.

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