Texas Instruments TI-89 Graphing Calculator

• Real and complex numeric results
• Symbolic manipulation for algebra, calculus and differential equations
• Numeric evaluation of functions in tables and data variable format
• Interactive analysis of function values, roots, maximums, minimums, integrals, derivatives, intersections, inflection points, and arc lengths
• Recursively-defined sequences access any number of previous terms
• Slope and direction fields for exploring differential equations
• List-based one- and two-variable statistical analysis, including eight regression models
• Statistics plots including scatter, xy-line, box and modified box plots
• Histograms and regression lines
• Matrix operations including inverse, determinant, transpose, augment, elementary row operations, and reduced row echelon form
• Matrix elements can be real or complex and numeric or symbolic
• Column-logic expressions in data/matrix editor are retained for automatic recalculation when values change
• Hexadecimal and binary operations and conversions

Differential Equations:

• Exact symbolic solutions of many 1st- and 2nd-order ordinary differential equations
• Solve single or systems of differential equations using Euler or Runga Kutta methods
• Graph slope fields or direction fields

Linear Algebra:

• Eigenvalues
• Eigenvectors
• Functions of matrices (like e A)
• LU or QR decompositions

3-D Rotation and Contour Plots:

• Real-time rotation of 3-D surfaces and contour graphs

Units of Measure:

• Use units in equations, symbolic computations, and unit conversions
• Select from 20 constants and over 100 units
• Create and store your own custom units

Systems of Equations:

• Solve systems of linear and nonlinear equations
• Display results in general or matrix formats

Programming

• Custom menus
• Dialog boxes
• Pop-up windows
• User-defined functions extend built-in functionality

Graph

• Parametric and polar equations
• Recursively-defined sequences
• 3-Dimensional surfaces
• Differential equations

• RAM
• Flash

• TI-89 Graphing Calculator
• Unit-to-Unit Link Cable
• Printed Mini Guidebook