Solution 21911: nDeriv and Derivative Commands Use Different Algorithms to Compute Answers.
...) - f(var-step))/(2*step) Please Note: On the TI-86, replace 'step' with the tolerance variable. In general, the derivative command is more accurate than the nDeriv command with the default step/tolerance (.001 by default). Solution 21911: nDeriv and Derivative Commands Use Different Algorithms ...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/21911
Solution 30190: Using The Significant Numbers Calculator From The Science Tools App on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
...ledge Base Knowledge Base Search How do I use the Significant Numbers calculator from the Science Tools App? Calculations that involve measurements include a certain amount of error. The precision of the measurement determines which digits (known as significant digits o...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/30190
Solution 34919: Calculating the Present Value of a Perpetuity (Infinite Annuity) on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
...erpetuity (infinite annuity) on the TI-83 Plus and TI-84 Plus family of graphing calculators? Sometimes when dealing with annuities, there are those that pay forever instead of for a specific period of time. Hence, they are called perpetuities or infinite annuities. Since these units do not have ...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/34919
Solution 34918: Calculating Derivatives on the TI-84 Plus Family of Graphing Calculators.
...ed and press [ENTER]. 3) Press [X,T,θ,n] [x²] [,] [X,T,θ,n] [,] [2] [)] [ENTER]. Please Note: The TI-84 Plus family of graphing calculators do not have symbolic manipulation capabilities and cannot find the symbolic derivative of a function. For a list of TI graphing calculators that have the ...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/34918
Solution 11893: Saving Text to a TI Graphing Calculator.
...wing instructions reference the procedure for various TI calculators. Procedure for the TI-82, TI-73, TI-83 Family, TI-84 Plus Family or TI-Nspire™ Handheld in TI-84 Plus Mode: Creating a new program: 1) Press [PRGM] 2) Scroll to NEW, then press [ENTER] 3) Input the program name, then press...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/11893
Solution 34894: Answers Displaying in Scientific Notation When in Normal Mode on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
... calculators? Notation Modes only effect the way answers are displayed. If the answer cannot be displayed in 10 digits or the absolute value is less than .001, it will default to Scientific Notation. This is a limitation of the TI-83 Plus and TI-84 Plus family of graphing calculators. Example: en...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/34894
Solution 13680: Finding Proper Fractions and Common Denominators on the TI-89, TI-89 Titanium, TI-92 Family or Voyage™ 200 Graphing Calculators.
... (rational expression [,var]) - the variable is with respect to a proper fraction. comDenom (expression [,var]) - the var is for common denominators that collect similar powers of this variable. Example: Find the proper fraction for (x^4-2x^2+x)/(2x^2+x+4) then transform the answer into a ratio o...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/13680
Solution 13344: Calculating lcm() (Least Common Multiple) of Two Arguments on the TI-89 Family, TI-92 Family and Voyage™ 200 Graphing Calculators.
...e screen, press [2ND] [MATH] to access the MATH menu. 2) Press [1] or [ENTER] to select the 1:Number submenu 3) Use the directional keys or press [ALPHA] [B] to select to B:lcm(. lcm() can also be accessed in the CATALOG. Please Note: On a TI-92 family or Voyage 200 calculator, just press [B] (...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/13344
Solution 12653: Converting Decimal Numbers Into Fractions on the TI-81.
... Knowledge Base Knowledge Base Search Can the TI-81 convert decimal numbers into fractions? The TI-81 does not have a built-in function to convert decimal numbers into fractions. To have this functionality, please consider upgrading to Texas Instruments late...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12653
Solution 13342: Using the Exact() Function on the TI-89 Family, TI-92 Family and Voyage™ 200 Graphing Calculators.
... syntax for the exact() function are listed below. exact(expression1[,tol]) exact(list1[,tol]) exact(matrix1[,tol]) The exact() function ensures that the calculator uses the Exact mode arithmetic regardless of the Exact/Approx mode setting to return, when possible, the rational-number equival...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/13342
Solution 12652: Decimal Degrees (DD) to Degrees, Minutes, Seconds (DMS) Conversions on the TI-81.
...Knowledge Base Search How do I perform decimal degrees (DD) to degrees, minutes, seconds (DMS) conversions on the TI-81? The TI-81 does not have built-in DMS-DD conversion features. However, these features can be added to the graphing calculator with the following programs.1. The follow...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12652
Solution 10431: Finding the Zero, Minimum, or Maximum of a Function on the TI-85 or TI-86.
... How do I find the zero, minimum, or maximum of a function on the TI-85 or TI-86? To find the zero, minimum, or maximum of a function, first we will have to graph it. Example: With the graph displayed, press [MORE] [F1] to access the MATH menu. Under the MATH menu, ROOT (zero) is over [F1], FMI...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/10431
Solution 12650: Calculating Trigonometric Functions on the TI-81.
...h Radian and Degree mode. For Degrees: 1) Press the [MODE] key. Press the [down arrow] key 2 times. 2) Highlight Deg and press the [ENTER] key, this changes the mode from a default of radian to degree for the measurement of angles. 3) Press the [2nd] key and the [CLEAR] key to return to the home ...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12650
Solution 13305: Inserting and Deleting a Row, Column, or Cell in the Data/Matrix Editor on the TI-89 Family, TI-92 Family and Voyage™ 200 Graphing Calculators.
...tor on a TI-89 family, TI-92 family or Voyage 200 calculators? Inserting a Row or Column: The new row or column is inserted before the row or column that contains the highlighted cell. In the Data/Matrix Editor: 1) Move the cursor to any cell in the applicable row or column 2) Press [2nd][F6] a...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/13305
Solution 12060: Interpolation Calculations on the TI-89 Family, TI-92 Family, and Voyage™ 200.
...erform interpolation calculations on either the TI-89 family, TI-92 family, or Voyage 200? Neither the TI-89 family, TI-92 family, or the Voyage 200 have a built-in interpolation function. However, students, educators, and other users of the TI-89 family may find third-part sources available on ...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12060
Solution 12645: Graphing a Function on the TI-80 and TI-81.
... products Knowledge Base Knowledge Base Search How can I graph functions using the TI-80 or TI-81? The TI-80 has been discontinued. When upgrading, consider the TI-73 Explorer™. The TI-73 Explorer is completely compatible with curricular materials for uppe...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12645
Solution 12217: Locked Variables Are Not Displayed in Open Dialog Box Choices on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculator.
...n the TI-89 family, TI-92 family and Voyage 200 is to keep the variable from being edited. All of the editors (Program, Geometry, Data/Matrix, Text) change the variable directly in memory (the editors do not work on a copy of the variable, but the variable itself). To edit locked variables, unloc...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12217
Solution 13062: Solving a System of Equations on the TI-89 Family, TI-92 Plus, and Voyage™ 200 Using the Gauss-Jordan method.
...the TI-89 Family, TI-92 Plus, and Voyage 200 using the Gauss-Jordan method? The TI-89 family, TI-92 Plus, and Voyage 200 graphing calculators do not have a one-key Gauss-Jordan method function. However, if you know what transformations you want to accomplish on a matrix, there are several comman...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/13062
Solution 10424: Degree, Minutes, Seconds (DMS) Conversions with the TI-85 or TI-86.
...h How do I perform Degree, Minutes, Seconds (DMS) conversions with the TI-85 and TI-86? The TI-85 and TI-86 recognize a number as DMS when that number is entered using a single quote after each value. For example, 15'12'8' would be interpreted as 15 degrees, 12 minutes and 8 seconds. ...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/10424
Solution 11832: Correcting an "Undefined Variable" Error on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
...efined variable error occurs when the variable referenced is not defined. For example, referencing a statistics variable when a statistical analysis has not been performed. If the variable is defined, then refer to the following instructions to resolve this error. 1) Press [2nd] [6] (MEM) [F1] ...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/11832
Solution 12183: Deleting Files from the Text Editor on the TI-89 Family, TI-92 Plus and Voyage™ 200.
...oll to the name of the text file to be deleted.• Press [←] (the backspace key, not the left arrow key) to delete the file.• Press [ENTER] to confirm that the file be deleted.Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information. Solution 12183: Deleting F...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12183
Solution 11831: Correcting an Address Error on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
...n the TI-89 family, TI-92 family, and Voyage 200 graphing calculators? Address Errors are caused by the use of 3rd party or shell operating systems that are not functional on a TI calculator. This is also related to the utilization of an address that is reserved for TI OS or TI Apps/programs onl...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/11831
Solution 14243: Drawing a Pictograph On The TI-73 Explorer™.
...wledge Base Knowledge Base Search How do I draw a pictograph on my TI-73 Explorer? The TI-73 Explorer can display no more than seven pictograph icons for up to seven categories on the screen. If the scale is not big enough (the Data List is broken up by more than seven ...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/14243
Solution 11830: Correcting a Window Variables Domain Error on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
...-89 family, TI-92 family, and Voyage 200 graphing calculators? The Window variables domain error occurs when the minimum value for x or y is larger than the maximum value. Edit the window values to resolve this error. Refer to the instructions below. • Press [♦][WINDOW] • Input the following v...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/11830
Solution 12172: Using the Ans() function on the TI-89 Titanium and Voyage™ 200 Graphing Calculators.
...us answer from the Home screen history area.If an integer is used as an argument, it will specify which answer to recall. The valid range of integer that can be used is 1 to 99 and cannot be an expression. The default is one, representing the most recent answer.Examples:• ans() [ENTER] will retur...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12172