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Mathematics, 15.06.2021 20:40 shongmadi77

Trong không gian với hệ tọa độ Oxyz cho điểm A( 1;2;1)  , mặt phẳng ( ) : 4 0  x y z     và mặt cầu ( ) : 1 1 4 36 S x y z             2 2 2 . Gọi (P) là mặt phẳng đi qua A , vuông góc với ( )  và
đồng thời (P) cắt mặt cầu (S) theo giao tuyến là một đường tròn có bán kính nhỏ nhất. Biết rằng phương
trình của mặt phẳng (P) khi đó là ax by cz a b c      1 0 ( , , ) . Tính giá trị biểu thức T a b c    2 .
A. T  5
.
B. T  3
.
C. T 10
.
D. T 1
.

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Trong không gian với hệ tọa độ Oxyz cho điểm A( 1;2;1)  , mặt phẳng ( ) : 4 0  x y z     và m...
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