Identify the correct unit-vector form of a vector whose -component is , -component is

MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

Identify the correct unit-vector form of a vector whose xx-component is 00, yy-component is 44, and zz-component is −7-7. (a) 465 j^−765 k^\dfrac{4}{\sqrt{65}}\,\hat{j}-\dfrac{7}{\sqrt{65}}\,\hat{k} (b) 4j^+7k^4\hat{j}+7\hat{k} (c) 4i^−7k^4\hat{i}-7\hat{k} (d) 4j^−7k^4\hat{j}-7\hat{k}

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