Compute and save the intermediate result of applying a power law to the state variables, parameters, sums of these things, and factr expressions of them as well.
add_pow(model, pow_nms, pow_arg1_nms, pow_arg2_nms, pow_const_nms)flexmodel object
name of the resulting power law
names of the variables used as the bases
names of the variables used as the exponents
names of the variables used as the constant