Other problems require you to provide a vector as your answer. WeBWorK allows yo

Question

Other problems require you to provide a vector as your answer. WeBWorK allows you to enter vectors either as a list of coordinates enclosed in angle braces, , or as a sum of multiples of the coordinate unit vectors, i, j and k, which you enter as i, j and k. For example, represents the same vector as i+3j-2k. What vector points from the origin to the point (-3, 4, 2)? . Just as you can enter a number by giving an equation that reduces to it, WeBWorK allows you to enter points and vectors by giving equations for the individual coordinates, or by using a vector-valued equation that reduces to your answer. For example, and [1-(-3)]i + [2-sqrt(4)]j + (6/2)k both represent the vector 4, 0, 3 , while + could be used to answer a question that asks for the vector 3, -2, 2 . Write 1, 1,-1 as a sum of two vectors: .

Explanation / Answer

a) -3i + 4j - 2k b) Origin vector and -i + j - k

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