Photos A X B 2 C

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A x b 2 c. Плоскость x/a+y/b+z/c=1. Re(z-1/z+1) = 1. X^2/A^2 + Y^2/B^2 + Z^2/C^2. X/A+Y/B+Z/C 1.
Плоскость x/a+y/b+z/c=1. Re(z-1/z+1) = 1. X^2/A^2 + Y^2/B^2 + Z^2/C^2. X/A+Y/B+Z/C 1.