## We will consider the following tasks:

- Solve
*A***x**=**b**, given*A*and**b**. - Solve
*A***x**i =**b**i for multiple**b**i's. - Calculate
*A*-1, where*A*-1*A*=*I*, the identity matrix. - Calculate determinant of
*A*, det(*A*).

- Solve
## Large packages of routines available for these tasks, e.g. LINPACK, LAPACK (public domain); IMSL, NAG libraries (commercial).

## We will look at methods assuming

*n*=*m*.