Let S be the set of all real values of 
such that a place passing through the points (−
2, 1, 1), (1, −
2, 1) and
(1, 1, −
2) also passes through the point (−1, −1, 1). Then S is equal to
(a)
{
}
(b)
{
(c)
{1, −1}
(d)
{3, −3}
Let S be the set of all real values of such that a place passing through the points (−2, 1, 1), (1, −2, 1) and
(1, 1, −2) also passes through the point (−1, −1, 1). Then S is equal to
(a)
{ }
(b)
{
(c)
{1, −1}
(d)
{3, −3}
Question ID - 57306 | SaraNextGen Top Answer
Let S be the set of all real values of such that a place passing through the points (−2, 1, 1), (1, −2, 1) and
(1, 1, −2) also passes through the point (−1, −1, 1). Then S is equal to
(a)
{ }
(b)
{
(c)
{1, −1}
(d)
{3, −3}
|
Let S be the set of all real values of (1, 1, − |
|||
|
(a) |
{ |
(b) |
{ |
|
(c) |
{1, −1} |
(d) |
{3, −3} |
1 Answer
127 votes
Answer Key / Explanation : (b) -
All four points are coplanar so
=0
(
2+1)2(3−
2) = 0
= ±
127 votes
Answer Link
127