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Line 3:
Line 3: + + + + + +
where's the dot product symbol? I go find it to replace the asterisk I left in its place...
Multiplication is a [[commutative]] operation: A X B = B X A.
Multiplication is a [[commutative]] operation: A X B = B X A.
==Symbol==
Several conventions are used to indicate multiplication.
*For simple numbers, the symbol used looks much like the letter "X", as in the examples above.
*Since the "X" looks like a letter, and letters are commonly used in algebra to indicate unknowns, or variables, the "dot" is frequently used: A * B = B * A.
*Also, in algebraic use, quantities are simply juxtaposed to indicate that they are to be multiplied: Y = 3aX + 4bZ.
==See also==
==See also==