HP 40gs HP 39gs_40gs_Mastering The Graphing Calculator_English_E_F2224-90010.p - Page 365
Increasing-powers mode, Rigorous setting, Simplify non-rational setting
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Increasing-powers mode When Increasing-powers mode is selected, polynomials will be listed so that the terms will have increasing powers of the independent variable (which is the opposite to how polynomials are normally written). [Default: unselected.] Comment: Who cares really? Rigorous setting When Rigorous mode is selected, any algebraic expression of the form |X|, i.e., the absolute value of X, is not simplified to X. [Default: selected.] Comment: Your choice here really depends entirely on the problem at the time. Simplify non-rational setting When Simplify non-rational mode is selected, non-rational expressions will be automatically simplified. [Default: selected.] Comment: When this mode is not selected an expression such as the one shown right will not be simplified. When selected, it simplifies to ¼. I suggest that this is generally more desirable! Calculator Tip Changing the configuration can have a profound effect on the behavior of the CAS. Before you play with these configurations too extensively it is suggested that you read carefully the relevant information in the manual and/or the information in Renée de Graeve's book mentioned in the introduction to this appendix on page 324. Remember that you can always return to the default configuration simply by going into the configuration view (SHIFT MODES) and pressing SHIFT CLEAR. 365
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