Definisi Matriks

What is the definition of a matrix?

• A collection of numbers arranged in a single line.

• A collection of numbers, symbols, or expressions arranged in a square or rectangular form according to rows and columns.

• A single number representing a mathematical operation.

• A list of equations used to solve mathematical problems.

In the matrix `((2, 1, 0), (4, -2, 7))`, which elements form the second row?

• (2, 4)

• (1, -2)

• (4, -2, 7)

• (0, 7)

Given matrix A = `((2, 3, 1), (0, 3, -8), (9, 1, 1))`, what is the value of the element a_23?

• 3

• 1

• -8

• 9

What is the order of matrix B = `((1), (2), (3))`?

• 1x3

• 3x3

• 3x1

• 1x1

What is the trace of matrix B = [[1, 2], [0, 3]]?

• 1

• 2

• 3

• 4

Which of the following matrices is a zero matrix?

• [[1, 0], [0, 1]]

• [[0, 0], [0, 0]]

• [[1, 2], [3, 4]]

• [[1, 0], [2, 3]]

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What is the transpose of matrix A = [[1, 2, 3], [3, 4, 5], [2, 1, 1]]?

• [[1, 2, 3], [3, 4, 5], [2, 1, 1]]

• [[1, 3, 2], [2, 4, 1], [3, 5, 1]]

• [[3, 2, 1], [5, 4, 3], [1, 1, 2]]

• [[1, 3, 5], [2, 4, 1], [3, 2, 1]]

Given matrix A = [[1/2, 0], [5, 9]] and matrix B = [[sin(pi/6), 0], [sqrt(25), 3^2]], are matrices A and B equal?

• Yes, because their orders are the same.

• No, because their elements are different.

• Yes, because their orders are the same and all corresponding elements are equal.

• No, because their main diagonals are different.

What is the sum of the main diagonal elements of matrix P = [[5, 1, 0], [4, -10, 3], [-3, -2, 1]]?

• 18

• 15

• 4

• -4

• -6