Matrices and Vectors — Flashcards
ICSE · Class 11 · Artificial Intelligence
36 flashcards for Matrices and Vectors (ICSE Class 11 Artificial Intelligence) to test yourself on key terms and facts. Sample: "What is a matrix?"
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What is a matrix?
Answer
A matrix is a set of numbers arranged in rows and columns to form a rectangular array. The numbers inside it are called entries or elements.
What does matrix order mean?
Answer
The order of a matrix is written as rows × columns. For example, a matrix with 3 rows and 4 columns has order 3 × 4.
What does aij represent in a matrix A?
Answer
aij denotes the element in the i-th row and j-th column of matrix A. It is a standard way to name a specific entry in a matrix.
When is a matrix called a square matrix?
Answer
A matrix is called a square matrix when the number of rows is equal to the number of columns. If it has n rows and n columns, it is a square matrix of order n.
What is a row matrix?
Answer
A row matrix is a matrix consisting of only one row. It is a type of matrix used when data is arranged horizontally.
What is a column matrix?
Answer
A column matrix consists of only one column. It is often used to represent a vector.
What is a diagonal matrix?
Answer
A diagonal matrix is a square matrix in which all non-diagonal elements are 0. Only the elements on the main diagonal can be non-zero.
What is an upper triangular matrix?
Answer
An upper triangular matrix is a square matrix in which all elements below the diagonal are 0.
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