Example. Given vectors a = {3, -3, 5} and b = {1, 2, 4}, what are the coordinates and magnitude of the vector c resulting from the cross product = c ? Answer: c = = {((-3)*4) (5*2), ((5*1) (3*4)), ((3*2) ((-3)*1))} – – – c = {–22, 9} –7, 24.78 A vector can also be multiplied with a square 3x3 matrix to produce another vector; however, this is a for another time. Other Resources A vast storehouse of reliable information about mathematics is available on the web from Wolfram, the makers of Mathematica, via http://mathworld.wolfram.com. A sequence of videos to learn about vectors and matrices is included in faces of vectors.” “Two The sequence links to Khan Academy videos on strands of and . (Search for linear “Khan algebra” and physics.” “Khan
Example. Given vectors a = {3, -3, 5} and b = {1, 2, 4}, what are the coordinates and magnitude of the vector c resulting from the cross product = c ? Answer: c = = {((-3)*4) – (5*2), ((5*1) – (3*4)), ((3*2) – ((-3)*1))} c = {–22, –7, 9} 24.78 A vector can also be multiplied with a square 3x3 matrix to produce another vector; however, this is a for another time. Other Resources A vast storehouse of reliable information about mathematics is available on the web from Wolfram, the makers of Mathematica, via http://mathworld.wolfram.com. A sequence of videos to learn about vectors and matrices is included in “Two faces of vectors.” The sequence links to Khan Academy videos on strands of and . (Search for “Khan linear algebra” and “Khan physics.”
vector-summary-gr6-12-students.docx