EXPLORING CONCEPTS
Think About It Consider a particle that is moving along the space curve given by . Write a vector-valued function for a particle that moves four times as fast as the particle represented by . Explain how you found the function.
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Think About It In Exercises 65-67, consider a scalar function f and a vector field F in space. Determine whether the expression is a vector field, a scalar function, or neither. Explain.
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Think About It In Exercise 65-67, consider a scalar function f and a vector field F in space. Determine whether the expression is a vector field, a scalar function, or neither. Explain.
