HP 50g Graphing Calculator - Manual (Page 848)

Page J-3
The POLYNOMIAL sub-menu
The POLYNOMIAL sub-menu includes functions for generating and
manipulating polynomials. These functions are presented in Chapter 5:
The TESTS sub-menu
The TESTS sub-menu includes relational operators (e.g., ==, <, etc.), logical
operators (e.g., AND, OR, etc.), the IFTE function, and the ASSUME and
UNASSUME commands.
Relational and logical operators are presented in Chapter 21 in the context of
programming the calculator in User RPL language. The IFTE function is
introduced in Chapter 3. Functions ASSUME and UNASSUME are presented
next, using their CAS help facility entries (see Appendix C).
ASSUME UNASSUME