- #1

- 42

- 0

Find nonzero vectors

**a**,

**b**, and

**c**such that

**a**x

**b**=

**a**x

**c**but

**b**does not equal

**c**

I would appreciate any help. Thanks

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- Thread starter Giuseppe
- Start date

- #1

- 42

- 0

Find nonzero vectors

I would appreciate any help. Thanks

- #2

- 575

- 1

- #3

- 1,681

- 3

inha said:

That's all wrong. The dot product is zero for perpendicular vectors.

The cross product is i x j = k.

- #4

LeonhardEuler

Gold Member

- 859

- 1

Yeah, the cross product is zero for parallel vectors. So (1,1,1) x (2,2,2)= (1,1,1) x (3,3,3) = (0,0,0) is a solution.Antiphon said:That's all wrong. The dot product is zero for perpendicular vectors.

The cross product is i x j = k.

- #5

- 575

- 1

Oh hell. I got my products mixed. Scratch that advice and sorry if I caused any problems.

- #6

- 50

- 0

(a,b,b+ka) satisfies the prop(k is a scalar not equal to zero)

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