Scalar multiplication of vectors
Three-dimensional geometry and vector algebra · Mathematics
Study notes
Q: a = (2,−1,2). Find (a) 3a (b) −2a (c) the unit vector â. (a) 3a = (6,−3,6). (b) −2a = (−4,2,−4). (c) |a| = √(4+1+4) = 3. â = (2/3,−1/3,2/3).
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Three-dimensional geometry and vector algebra · Mathematics
Q: a = (2,−1,2). Find (a) 3a (b) −2a (c) the unit vector â. (a) 3a = (6,−3,6). (b) −2a = (−4,2,−4). (c) |a| = √(4+1+4) = 3. â = (2/3,−1/3,2/3).