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Larson Texts
Larson Precalculus: Magnitude of a Scalar Multiple [Pdf]
Example and some exercises on how to find the magnitude of a scalar multiple.
CK-12 Foundation
Ck 12: Scalar Projection
[Free Registration/Login may be required to access all resource tools.] Compute the magnitude of a scalar multiple cv using ||cv|| = |c|v. Compute the direction of cv knowing that when |c|v is not equal to 0, the direction of cv is...
Khan Academy
Khan Academy: Unit Vectors
Find a unit vector in the direction of a given vector. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.