1. Implement a function, eigsrestart, following the outline in Section Test it on the nonsymmetric matrices bfwa398 and west2021 by estimating maximum of six eigenpairs and checking them with...

1.

Implement a function, eigsrestart, following the outline in Section
Test it on the nonsymmetric matrices bfwa398 and west2021 by estimating maximum of six eigenpairs and checking them with residchk. Use

2.

Test the function eigsbexplicit on the nonsymmetric matrices steam2, ORSIIR_1, and the symmetric matrix DIMACS10. You will need to determine appropriate values of m for each matrix. Try to estimate six eigenpairs and check them with residchk. You might not be able to find six.