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Summary
[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, ..
[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, ..Introduction
During the course of study of Mathematics, we must have come across several parts of inverse operations like (addition, subtraction) (multiplication, division) (forming an equation whose roots are given - solving a given equation) and so on. In practical situ..
During the course of study of Mathematics, we must have come across several parts of inverse operations like (addition, subtraction) (multiplication, division) (forming an equation whose roots are given - solving a given equation) and so on. In practical situ..Laura connected points Y and Z to make one side of an angle. Which oth..
Laura connected points Y and Z to make one side of an angle. Which other point should she connect to point Y in order to make a 28 angle? => L or K or M or N..
How do you connect the points I (-4, 1), J (-1, 1), K (-1, 4) and L (-..
How do you connect the points I (-4, 1), J (-1, 1), K (-1, 4) and L (-4, 4) to get the shape of the letter N? => K → J → I → L or L → J → K → I or I → K → J → L or I → L → J → K..
Which system of linear inequalities defines the trapezoid region conne..
Which system of linear inequalities defines the trapezoid region connecting the points (1, 1), (4, 1), (5, 3) and (0, 3)? => y ≤ 1, y ≤ 3 and y ≥ - 2 x + 3; or y ≥ 1, y ≤ 3, y ≥ 2 x - 7 and y ≥ - 2 x + 3 or y ≤ ..
How do you connect the points E (-4, -1), F (-2, -1), G (-3, -2) and H..
How do you connect the points E (-4, -1), F (-2, -1), G (-3, -2) and H (-3, -4) to get the shape of the letter Y? => H → G → E → F or E → G → F and G → H or E → H → F and G → H or None of the above..
A seminar is given to the students of five classes of a school on the ..
A seminar is given to the students of five classes of a school on the importance of communication skills. The number of students of each class who attended the communication skills development classes before and after attending the seminar are listed in the table. At 95% confide..
Find the z scores of three students who had a score of 93, 80, 84 in a..
Find the z scores of three students who had a score of 93, 80, 84 in an examination for a pre-medicine course which has a mean of 84 and a standard deviation of 4. => 9, - 4, 0 or 23.25, 20, 21 or 2.25, - 1, 0 or - 2.25, 1, 0..
The percentage of points scored by Jack each year during his four year..
The percentage of points scored by Jack each year during his four year degree course is shown in the table. Which is the equivalent box-and-whisker plot for the data? Also find the average percentage of points scored by him during the course. Year Percentage of points 1..
Linear Equations in One Variable
An equation is an equality connecting some unknowns. The unknowns are represented by "letters" and are called "the variables". If the equation has only one unknown, it is called "an equal in one variable". The word "Linear" means "of degree one". Hence if o..
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