#2643 docstring for idaklu add banded options

Author: martinjrobins

pybamm/solvers/idaklu_solver.py

@@ -52,11 +52,12 @@ class IDAKLUSolver(pybamm.BaseSolver):
                 # print statistics of the solver after every solve
                 "print_stats": False,
 
-                # jacobian form, can be "none", "dense", "sparse", "matrix-free"
+                # jacobian form, can be "none", "dense", 
+                # "banded", "sparse", "matrix-free"
                 "jacobian": "sparse",
 
                 # name of sundials linear solver to use options are: "SUNLinSol_KLU",
-                # "SUNLinSol_Dense", "SUNLinSol_SPBCGS",
+                # "SUNLinSol_Dense", "SUNLinSol_Band", "SUNLinSol_SPBCGS",
                 # "SUNLinSol_SPFGMR", "SUNLinSol_SPGMR", "SUNLinSol_SPTFQMR",
                 "linear_solver": "SUNLinSol_KLU",