pg_utils.pg_model.base_utils.linearize

pg_utils.pg_model.base_utils.linearize(expr, *subs_maps, perturb_var=\epsilon)

Linearize expression

Parameters:

• expr (sympy.Expr) – expressions to be linearized

• *subs_maps (dict) –

  subtitution maps, takes the form {A: A0 + eps*A1, B: B0 + eps*B1, ...}

• perturb_var (sympy.Symbol) – perturbation number, default to be the symbol eps from pg_fields module

Returns:

linearized expression