Inverse matrix: Let A be an n-th order square matrix on the number field. If there is another n-order matrix B on the same number ...

APP description The multiplication of the two matrices needs to be similar to the following: (3x2)x(2x3), (3x3)x(3x1). Matrix mult...

Matrix subtraction: Define matrix subtraction for two matrices of the same size. The difference between two m×n (pronounced "m×n"...

APP description The row of matrix A is replaced by the corresponding column, and the resulting new matrix is called the transpose...

Score size comparison calculator Molecular method First, the two fractions with different molecular weights are the same two fract...

After a fraction is reduced or expanded, its fraction is equal to the original fraction, which is called equivalent fraction. A lo...

Expression is a combination of numbers, operators, number grouping symbols (brackets), free variables and constraint variables, wh...

APP description Multiply three identical numbers, called the cube of this number. Also called the third party. Multiply three iden...

APP description An index is a form of arithmetic of a rational number, which represents the relationship of several factors multip...

APP description A positive integer factorial means multiplying from 1 by 2 by 3 by 4 until the required number is multiplied. For ...