AP EAMCET Engineering 22 Apr 2019 Shift 1 Paper

Section: Mathematics

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Question : 29 of 160

Marks: +1, -0

For a non-zero real number x. if the points with position vectors
(x - u)

^

i

+ x

^

j

+ x

^

k

, x

^

i

+ (x - v)

^

j

+ x

^

k

, x

^

i

+ x

^

j

+ (x - w)

^

k

and (x - 1)

^

i

+ (x - 1)

^

j

+ (x - 1)

^

k

are coplanar , then

u + v + w = 1
uvw = 1
1
u
+
1
v
+
1
w
= 1
uv + vw + uw = 1

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