Scaling Different Axes
Suppose that you wanted to transform a two-dimensional vector so that the first element doubled in size, while the second element was cut by a third.
You can do this with matrix multiplication, as the matrix A
, which yields the R output:
[,1] [,2]
[1,] 2 0.0000000
[2,] 0 0.6666667
achieves the desired result.
This exercise is part of the course
Linear Algebra for Data Science in R
Exercise instructions
- Multiply
A
by the vectorc(1, 1)
. Print the result.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Multiply A by the given vector
print(___ ___ ___)