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UPSC NDA I 2023 Mathematics Solved Paper

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Consider the following for the next two (02) items that follow :

Let

A(1,-1,2)

and

B(2,1,-1)

be the end points of the diameter of the sphere

x^2+y^2+z^2+2 u x+2 v y+2 w z-1=0

.

[NDA I 2023]

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Question : 61 of 120

Marks: +1, -0

What is

u+v+w

-2
-1
1
2

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