words about in math

Question 1 - Question: Answer: As n represents all positive integers, we have Multiplying the above terms of both sides respectively, we get Multiplying both sides of inequality by n!, we g..

In other words, a square matrix A is invertible if and only if A is a non-singular matrix. (c) If A and B are invertible square matrices, then (AB) - 1 = B - 1 A - 1 (d) If A and B are two non-singular square matrices of the same order, then AB and BA are also non-singular matr..

A square matrix A=[a i j ] n x n is called an identity or unit matrix if (2) a i j =1 for all i = j In other words a square matrix each of whose diagonal elements is unity and each of whose non-diagonal elements is equal to zero is called an identity or unit matrix. The identity ..

[A i j ] where A i j is the co-factor of the element a i j . Adjoint of A is denoted by Adj A. Note that the concept of adj is only for square matrix. A square matrix A is said to be non-singular if |A| 0. Let A be a square matrix of order n. If there exists a square matrix B of order n, such that ..

Find the number of arrangements of the letters of the word MATH. => 12 or 24 or 9 or 10..

Which of the following represents the equation in words - 1 6 9 = - 13? => The square of - 13 is - 169. or The square root of 169 is - 13. or The positive square root of 169 is - 13. or The negative square root of 169 is - 13...

What percent of the word FEEDBACK is FEED ? => 65% or 80% or 35% or 50%..

Write the equation in words ± 8 1 = ± 9. => The positive square root of 81 is 9. or The positive and negative square roots of 81 are 9 and - 9. or The positive and negative squares of 9 are 81 and - 81. or The negative square root of 81 is - 9...

Express equation as a disjunction using the word 'or': | b + 5| = 9 => b = - 9 or b = - 14 or b = 4 or b = 9 or b = - 4 or b = - 14 or b = 4 or b = - 14..

Identify a word phrase for the expression x - 12. => sum of a number and 12 or the difference between a number and 12 or a number less than 12 or 12 times a number..