Mod 5: Matrices

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Two matrices

A <- matrix(1:100, nrow=10)
B <- matrix(1:1000, nrow=10)

A <- matrix(1:100, nrow=10)  
B <- matrix(1:1000, nrow=10)

Determinants and Inverses

For matrix A: det(A)

det(A)

## [1] 0

The determinant for A is 0 which means that A has no inverse.

For matrix B: det(B) or solve(B)

#det(B)
#solve(B)

Errors out with either:

• Error in determinant.matrix(x, logarithm = TRUE, …) : ‘x’ must be a square matrix
• Error in solve.default(B) : ‘a’ (10 x 100) must be square
  

GitHub

Related file(s) can be found at Git Me