Square or Multiplication #shorts #mathstricks #qurimind

Multiple

Multiplication by short cut methods

Consider the set S={1,-1} of square roots of unity and multiplication (x) as a binary operation on S .Construct the composition table for multiplication (xx) on S Also,find the identity element for multiplication on S and the inverses of various elements.

Discussion OF ex-3.4,|| Cross-multiplication method || Short method to remembering cross-multiplication method by Determinant || Example-14,15

Types OF matrix|| Addition OF matrix || Scalar multiplication || Classification OF square matrix

Squaring Of Numbers Without Multiplication|Column Method|Diagonal Method