Questions  

If the points (1, 1, -3) and (1, 0, -3) lie on opposite sides of the plane x+y+3z+d=0 then

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By Expert Faculty of Sri Chaitanya
ctaimg
a
d<7
b
d>8
c
7
d
d<7 or d>8
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detailed solution

Correct option is C

d-7 and d-8 must have opposite signs ⇒7


ctaimg

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