Texas Instruments Titanium TI-89 User Manual

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Finding the Derivative of Functions
Finding the Derivative of FunctionsFinding the Derivative of Functions
Finding the Derivative of Functions
Finding Implicit Derivatives
Finding Implicit DerivativesFinding Implicit Derivatives
Finding Implicit Derivatives
Steps and keystrokes Display
Find the derivative of (xNy)
3
/(x+y)
2
with
respect to x.
This example illustrates using the calculus
differentiation function and how the function is
displayed in “pretty print” in the history area.
Press 2 = c X | Y d Z 3 e c X « Y
d Z 2 b X d ¸
Steps and keystrokes Display
Compute implicit derivatives for equations in
two variables in which one variable is defined
implicitly in terms of another.
This example illustrates using the calculus
implicit derivative function.
Press … D X Z 2 « Y Z 2 Á 100 bX b Y
d ¸

Texas Instruments Titanium TI-89 Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
Memory	188 KB RAM, 2.7 MB Flash ROM
Type	Graphing Calculator
Display	Monochrome
Processor	Motorola 68000
Processor Speed	12 MHz
Power Source	4 AAA batteries
Connectivity	USB
Programming	TI-BASIC, Assembly
Operating System	AMS (Advanced Mathematics Software)