8.) Matrix multiplicalion is pretty fough-so I uill cover that in closs. In the meantine, compute the fellowing it 6 -) 12-34 P=-31-2 027 A= B= -1-14 ५ । 2-3 3. こて 5 Ithe opration is not possible wrile NOT POSSIBLE and I be able to explain why. a. AtB d. A-3D b. BtC e. B+ Ź (.2A
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
The addition or subtraction of two matrices and are possible only if the number of rows and columns of the matrices and are equal.
Suppose that the matrices and have same number of rows and columns. Then, is calculated by adding corresponding elements of the matrices and , and is calculated by subtracting corresponding elements of the matrices from .
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