Texas Instruments TI-89 User Manual - Page 829

Graph CATALOG Graph expression1[, expression2] [, var1] [, var2] The Smart Graph feature graphs the requested expressions/ functions using the current graphing mode. In function graphing mode and ZoomStd window: Graph 1.25aù cos(a),a ¸ Expressions entered using the Graph or Table commands are assigned increasing function numbers starting with 1. They can be modified or individually deleted using the edit functions available when the table is displayed by pressing † Header. The currently selected Y= functions are ignored. If you omit an optional var argument, Graph uses the independent variable of the current graphing mode. In parametric graphing mode and ZoomStd window: Graph time,2cos(time)/time,time ¸ Note: Not all optional arguments are valid in all modes because you can never have all four arguments at the same time. Some valid variations of this instruction are: Function graphing Graph expr, x Parametric graphing Graph xExpr, yExpr, t Polar graphing Graph expr, q Sequence graphing Not allowed. 3D graphing Graph expr, x, y Diff Equations graphing Not allowed. Note: Use ClrGraph to clear these functions, or go to the Y= Editor to re-enable the system Y= functions. In 3D graphing mode: Graph (v^2 ì w^2)/4,v,w ¸ 4Hex MATH/Base menu integer1 4Hex ⇒ integer Converts integer1 to a hexadecimal number. Binary or hexadecimal numbers always have a 0b or 0h prefix, respectively. 256 4Hex ¸ 0b111100001111 4Hex ¸ Zero, not the letter O, followed by b or h. 0b binaryNumber 0h hexadecimalNumber A binary number can have up to 32 digits. A hexadecimal number can have up to 8. Without a prefix, integer1 is treated as decimal (base 10). The result is displayed in hexadecimal, regardless of the Base mode. If you enter a decimal integer that is too large for a signed, 32-bit binary form, a symmetric modulo operation is used to bring the value into the appropriate range. 0h100 0hF0F Appendix A: Functions and Instructions 829