Education Technology

Solution 11834: Algorithm for cSolve() Function on the TI-89 Family, TI-92 Family, Voyage™ 200 and TI-Nspire™ CAS Family.

What is the cSolve() (complex solve) function algorithm on the TI-89 family, TI-92 family, Voyage 200 and TI-Nspire CAS family products?

The algorithm for cSolve() is the same as solve(), except the domain is temporarily set to complex so that complex solutions are sought and not rejected.

The solve() function uses factoring together with the inverses of functions such as ln(), sin(), etc. Except in exact mode, these techniques might be supplemented by heuristics to isolate solutions, followed by nSolve() to refine approximations.