Аналитическая геометрия. Часть III. Многомерные пространства. Гиперповерхности второго порядка. Шурыгин В.В. - 59 стр.

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Φ Ψ
Φ = Ψ
Φ = Ψ ` Φ∩` = Ψ∩`
` x
1
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i
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a
11
(x
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2
+ 2a
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(x
1
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b
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b
1 n+1
=
a
n+1 n+1
b
n+1 n+1
.
x
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