In mathematics, a determinant is a special number that can be calculated from a square matrix. The determinant provides important properties of the matrix and is used in various operations such as finding the matrix's inverse, solving systems of linear equations, and characterizing certain matrix transformations.
Let’s review the options provided:
| 1. Determinant is a rectangular arrangement of numbers. |
| 2. Determinant is a square arrangement of numbers. |
| 3. Determinant is a value assigned to a square arrangement of numbers in a specific manner. |
| 4. Determinant is sum of diagonals elements of a square arrangement of numbers. |
Let's evaluate each statement:
Option 1: A determinant is not a rectangular arrangement of numbers. A matrix can be rectangular, but determinants are calculated only for square matrices.
Option 2: While determinants are related to square arrangements of numbers (square matrices), the determinant itself is not an arrangement but a numerical value.
Option 3: This is the correct statement. A determinant is indeed a value assigned to a square arrangement (square matrix) of numbers, determined by a specific calculation involving the matrix's elements.
Option 4: The determinant is not simply the sum of diagonal elements. It involves a specific formula that includes combinations of matrix elements and their positions.
Thus, the correct statement regarding determinants is: "Determinant is a value assigned to a square arrangement of numbers in a specific manner."
| Variable | Price | Weights | |
|---|---|---|---|
| Base Year | Current Year | ||
X | 30 | 50 | 8 |
Y | 10 | 15 | 7 |
Z | 25 | 30 | 4 |
| LIST I | LIST II | ||
| A. | Measure of a characteristic of a sample | I. | Parameter |
| B. | An assumption made about a population | II. | Standard Error |
| C. | Standard deviation of the sample | III. | Statistic |
| D. | Measure of characteristic of a population | IV. | Null Hypothesis |
| List - I | List -II |
| (A) t-distribution | (I)sample size\(\geq30\) |
| (B) Sample mean | (II)\(X\) |
| (C) Population mean | (III)degree of freedom |
| (D)Z-distribution | (IV)\(\mu\) |
Select the statements that are CORRECT regarding patterns of biodiversity.
Which of the following hormone is not produced by placenta ?
List - I | List - II | ||
| A | Streptokinase | I | Blood-Cholestrol lowering agents |
| B | Cyclosporin | II | Clot Buster |
| C | Statins | III | Propionibacterium sharmanii |
| D | Swiss Cheese | IV | Immuno suppressive agent |
Which of the following option determines percolation and water holding capacity of soils ?