Solving Matrix-Vector Equations

Linear Algebra for Data Science in R

Eric Eager

Data Scientist at Pro Football Focus

Motivation - Can These Vectors Make That Vector?

Motivation - Can These Vectors Make That Vector?

Motivation - Can These Vectors Make That Vector?

Motivation - Can These Vectors Make That Vector?

A%*%x

     [,1]
[1,]   -1
[2,]    4
[3,]    0

A[, 1]*x[1] + A[,2]*x[2]

[1] -1  4  0

Motivation - Can These Vectors Make That Vector?

Example of a Matrix-Vector Equation

Example of a Matrix-Vector Equation

Example of a Matrix-Vector Equation

Let's practice!

Linear Algebra for Data Science in R