12.11 LAB: Matrix multiplication A matrix is a rectangle of numbers in rows and columns. A 1xN matrix has one row and N columns. An NxN matrix has N rows and N columns. Multiplying a 1xN matrix A and an NxN matrix B produces a 1xN matrix C. To determine the Nth element of C multiply the each element of A by each element of the Nth column of B and sum the results. Helpful information can be found at matrix multiplication. Write a program that reads a 1xN matrix A and an NxN matrix B from input and outputs the 1xN matrix product, C. N can be of any size >= 2. • A is represented as a list of the integers found on the first line of input. • B is represented as a list of N rows, each of which is a list of N integers. • Each of the next N input lines contains the integers for one row of B. • Note: Input is one row at a time but multiplication uses columns of B. For coding simplicity, follow each output integer by a space, even the last one. The output ends with a newline. Ex: If the input is: 23 12 34 A contains 2 and 3, the first row of B contains 1 and 2, and the second row of B contains 3 and 4. The first element of C is (2 * 1) + (3*3), and the second element of C is (2*2)+(3 * 4). The program output is: 11 16
12.11 LAB: Matrix multiplication A matrix is a rectangle of numbers in rows and columns. A 1xN matrix has one row and N columns. An NxN matrix has N rows and N columns. Multiplying a 1xN matrix A and an NxN matrix B produces a 1xN matrix C. To determine the Nth element of C multiply the each element of A by each element of the Nth column of B and sum the results. Helpful information can be found at matrix multiplication. Write a program that reads a 1xN matrix A and an NxN matrix B from input and outputs the 1xN matrix product, C. N can be of any size >= 2. • A is represented as a list of the integers found on the first line of input. • B is represented as a list of N rows, each of which is a list of N integers. • Each of the next N input lines contains the integers for one row of B. • Note: Input is one row at a time but multiplication uses columns of B. For coding simplicity, follow each output integer by a space, even the last one. The output ends with a newline. Ex: If the input is: 23 12 34 A contains 2 and 3, the first row of B contains 1 and 2, and the second row of B contains 3 and 4. The first element of C is (2 * 1) + (3*3), and the second element of C is (2*2)+(3 * 4). The program output is: 11 16
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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matrixA = []
matrixB = []
matrixC = []
I need help creating a phython code
Transcribed Image Text:12.11 LAB: Matrix multiplication
A matrix is a rectangle of numbers in rows and columns. A 1xN matrix has one row and N columns. An NxN matrix has N rows and N
columns.
Multiplying a 1xN matrix A and an NxN matrix B produces a 1xN matrix C. To determine the Nth element of C multiply the each element of
A by each element of the Nth column of B and sum the results. Helpful information can be found at matrix multiplication.
Write a program that reads a 1xN matrix A and an NxN matrix B from input and outputs the 1xN matrix product, C. N can be of any size >=
2.
• A is represented as a list of the integers found on the first line of input.
• B is represented as a list of N rows, each of which is a list of N integers.
Each of the next N input lines contains the integers for one row of B.
• Note: Input is one row at a time but multiplication uses columns of B.
For coding simplicity, follow each output integer by a space, even the last one. The output ends with a newline.
Ex: If the input is:
23
1 2
34
A contains 2 and 3, the first row of B contains 1 and 2, and the second row of B contains 3 and 4. The first element of C is (2 * 1) + (3 * 3),
and the second element of C is (2*2)+(3 * 4). The program output is:
11 16
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