By the time the first white settlers arrived, Native Americans knew how to grow almost 100 different kinds of crops. These were used as medicines and dyes, as well as food. In addition to gathering and farming, most Native Americans hunted for meat. In the 1500s, the Spanish brought horses to America.
more ... The operation that reverses the effect of another operation. Example: Addition and subtraction are inverse operations. Start with 7, then add 3 we get 10, now subtract 3 and we get back to 7. Another Example: Multiplication and division are inverse operations. Start with 6, multiply by 2 we get 12, now divide by 2 and we get back to 6.
Multiplicative Inverse. In a monoid or multiplicative group where the operation is a product, the multiplicative inverse of any element is the element such that, with 1 the identity element. The multiplicative inverse of a nonzero number is its reciprocal (zero is not invertible).For complex,here. The multiplicative inverse of a nonsingular matrix is its matrix inverse. To detect the multiplicative inverse of a given element in the multiplication table of finite multiplicative group, traverse the element's row until the identity element 1 is encountered, and then go up to the top row.