Engineering Mathematics(Matrics)

Question 1

horizontal lines of entries

Answer 1

Rows

Question 2

vertical lines of entries

Answer 2

Columns

Question 3

the location of each element (e.g. a 23 means that an entry is located at second row third
column or Row 2 and Column 3)

Answer 3

Indices

Question 4

row x column. Row come always first! (m x n)

Answer 4

Size

Question 5

matrices having just a single row or column, the elements of a vector are called
components (denoted by bolded lower case letter

Answer 5

Vector Matrix

Question 6

when m = n, then its diagonal is called main diagonal

Answer 6

Square Matrix

Question 7

a matrix that is not a square

Answer 7

Rectangular Matrix

Question 8

what are matrices whose transpose equals the matrix itself

Answer 8

Symmetric Matrices

Question 9

what are matrices whose transpose equals the negative of its elements

Answer 9

Skew Matrices

Question 10

are square matrices that can have nonzero entries only on and above the main
diagonal.

Answer 10

Upper Triangular

Question 11

can have nonzero entries only on and below the main diagonal

Answer 11

Lower Triangular

Question 11

what are square matrices that can have nonzero entries only on the main diagonal

Answer 11

Diagonal Matrices

Question 12

all diagonal elements of a diagonal matrix are equal

Answer 12

Scalar Matrices

Question 13

all elements on the main diagonal are all 1 (also called identity matrix) and the rest of
the elements are zero

Answer 13

Unit Matrix

Question 13

all elements on the main diagonal are all 1 (also called identity matrix) and the rest of
the elements are zero

Answer 13

Unit Matrix

Question 14

A _______ (denoted by bolded capital letter) is a rectangular array of numbers enclosed in brackets. These numbers are called elements of the matrix

Answer 14

Matrix