Final answer:
Two techniques that can be used to determine if vectors u, v, and w are coplanar are: using the cross product and using the scalar triple product.
Step-by-step explanation:
Two techniques that can be used to determine if vectors u, v, and w are coplanar are:
- Using the cross product: If the cross product of any two of the vectors is equal to the third vector multiplied by a scalar, then the vectors are coplanar.
- Using the scalar triple product: If the scalar triple product of the vectors is zero, then the vectors are coplanar.
Therefore, option B is the correct answer as it requires using two different techniques.