the value of (vecA+vecB)xx(vecA-vecB) is...

the value of `(vecA+vecB)xx(vecA-vecB)` is

`2(vecbxxveca)`

`-2(vecbxxveca)`

`vecbxxveca`

`vecaxxvecb`

Text Solution

Verified by Experts

The correct Answer is:

(a): `(vec a+vec b)xx(vec a-vec b)=0+vecbxxveca+vecaxx(-vecb)+0`
`=vecbxxveca-vecaxxvecb`
`vecbxxveca-(-vecbxxveca)`
`=2(vecbxxveca)`

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