Page 232 - Data Science class 11
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This will cause the following to be displayed:
6.9.4 matrix arithmetical computations
Various mathematical operations such as addition, subtraction, multiplication, and division can also be performed on
matrices using the R operators. The result of the operation is also a matrix.
The dimensions (number of rows and columns) should be the same for the matrices involved in the operation.
a. Matrix Addition & Subtraction
Example
Enter the following code snippet:
# Create two 2x3 matrices.
matrix1 <- matrix(c(2, 9, -1, 4, 2, 5), nrow = 2)
print(matrix1)
matrix2 <- matrix(c(4, 2, 0, 9, 3, 8), nrow = 2)
print(matrix2)
# Add the two matrices.
result <- matrix1 + matrix2
cat("Result of addition","\n")
print(result)
# Subtract the matrices
result <- matrix1 - matrix2
cat("Result of subtraction","\n")
print(result)
230 Touchpad Data Science-XI

