c05 Chapter Introduction – a description of the Chapter and an overview of the algorithms available
| Function Name | Mark of Introduction | Purpose | 
| c05auc Example Text | 23 | nag_zero_cont_func_brent_binsrch Zero of continuous function, Brent algorithm, from a given starting value, binary search for interval | 
| c05avc Example Text | 9 | nag_interval_zero_cont_func Binary search for interval containing zero of continuous function (reverse communication) | 
| c05awc Example Text | 23 | nag_zero_cont_func_cntin Zero of continuous function, continuation method, from a given starting value | 
| c05axc Example Text | 9 | nag_zero_cont_func_cntin_rcomm Zero of continuous function, continuation method, from a given starting value (reverse communication) | 
| c05ayc Example Text | 23 | nag_zero_cont_func_brent Zero of continuous function in a given interval, Brent algorithm | 
| c05azc Example Text | 9 | nag_zero_cont_func_brent_rcomm Zero of continuous function in a given interval, Brent algorithm (reverse communication) | 
| c05bac Example Text Example Data | 9 | nag_lambertW Real values of Lambert's function, | 
| c05bbc Example Text Example Data | 23 | nag_lambertW_complex Values of Lambert's function, | 
| c05mdc Example Text | 26.1 | nag_zero_nonlin_eqns_aa_rcomm Solution of a system of nonlinear equations using Anderson acceleration (reverse communication) | 
| c05qbc Example Text | 23 | nag_zero_nonlin_eqns_easy Solution of a system of nonlinear equations using function values only (easy-to-use) | 
| c05qcc Example Text | 23 | nag_zero_nonlin_eqns_expert Solution of a system of nonlinear equations using function values only (comprehensive) | 
| c05qdc Example Text | 23 | nag_zero_nonlin_eqns_rcomm Solution of a system of nonlinear equations using function values only (reverse communication) | 
| c05qsc Example Text | 23 | nag_zero_sparse_nonlin_eqns_easy Solution of a sparse system of nonlinear equations using function values only (easy-to-use) | 
| c05rbc Example Text | 23 | nag_zero_nonlin_eqns_deriv_easy Solution of a system of nonlinear equations using first derivatives (easy-to-use) | 
| c05rcc Example Text | 23 | nag_zero_nonlin_eqns_deriv_expert Solution of a system of nonlinear equations using first derivatives (comprehensive) | 
| c05rdc Example Text | 23 | nag_zero_nonlin_eqns_deriv_rcomm Solution of a system of nonlinear equations using first derivatives (reverse communication) | 
| c05zdc Example Text | 23 | nag_check_derivs Check user's function for calculating first derivatives of a set of nonlinear functions of several variables |