Home
Class 12
MATHS
If a,b and c are non-coplanar vectors an...

If a,b and c are non-coplanar vectors and `lamda` is a real number, then the vectors `a+2b+3c,lamdab+muc and (2lamda-1)c` are coplanar when

A

`mu in R`

B

`lamda=(1)/(2)`

C

`lamda=0`

D

no value of `lamda`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D

For coplanar vectors `|(1,2,3),(0,lamda,mu),(0,0,2lamda-1)|=0`
or `(2lamda-1)lamda=0` or `lamda=0,(1)/(2)`.
Promotional Banner

Similar Questions

Explore conceptually related problems

If a,b and c are non-coplanar vectors, then prove that the four points 2a+3b-c,a-2b+3c,3a+4b-2c and a-6b+6c are coplanar.

If a,b and c are non-coplanar vectors, prove that 3a-7b-4c, 3a-2b+c and a+b+2c are coplanar.

If a,b and c are three non-zero vectors such that no two of these are collinear. If the vector a+2b is collinear with c and b+3c is collinear with a( lamda being some non-zero scalar), then a+2b+6c is equal to

If a,b,c are three non-coplanar vectors, then 3a-7b-4c,3a-2b+c and a+b+lamdac will be coplanar, if lamda is

a and b are non-collinear vectors. If c=(x-2) a+b and d=(2x+1)a-b are collinear vectors, then the value of x= . . .

p=2a-3b,q=a-2b+c and r=-3a+b+2c , where a,b,c being non-coplanar vectors, then the vector -2a+3b-c is equal to

Statement-I If the vectors a and c are non collinear then the lines r=6a-c+lambda(2c-a) and r=a-c+mu(a+3c) are coplanar. Statement-II There exist lambda and mu such that the two values of r in Statement-I becomes same.

Theorem 1: If a and b are two non collinear vectors; then every vector r coplanar with a and b can be expressed in one and only one way as a linear combination: xa+yb.

If the unit bar(a),bar(b) and bar( c ) are coplanar then …………..

If a,b and c are the position vectors of the vertices A,B and C of the DeltaABC , then the centroid of DeltaABC is