Solution 17090: Troubleshooting when the Y= Editor Screen Displays X= instead of Y= on the TI-83 Plus Family and TI-84 Plus Family.
... allow me to graph according to the X axis and not according to Y? If X= is displayed instead of the standard Y= when [Y=] is pressed, then the Inequality Graphing Application (App) is enabled on the TI-83 Plus family or TI-84 Plus family calculator. In order to restore the Y= Editor, the Ine...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/troubleshooting-messages-unexpected-results/17090
Solution 34538: Calculating Standard Deviation on the TI-83 Plus and TI-84 Plus Family.
... StdDev() using two lists An example tutorial on a TI-84 Plus CE graphing calculator calculating standard deviation using two lists. l9VIvZSDrQ0 Step-by-step instructions Standard deviation can be calculated using several methods on the TI-83 Plus and TI-...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/34538
Solution 11576: Algorithm Used for Calculating the Sine Regression On the TI-86, TI-83 Family, or TI-84 Plus Family.
...n time with the x list being in sorted order. More precisely, the user must havex(k) - x(k-1) = constant, for k = 2,3,...,nIf this restriction can be satisfied, an initial frequency guess for some data sets can be obtained by finding the parameters e,f,g that minimize the following sum of the squ...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/11576
Solution 11758: Functionality of the Function Keys [F1 - F5] on the TI-83 Family, TI-89 Family, TI-92 Family and Voyage™ 200.
...tabs" at the top of the screen that pertain to the function keys. When pressed, the menu corresponding to that particular tab is displayed, providing quick access to various commands and functions. For additional information, refer to the guidebook for the model of calculator being used. Solutio...https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/product-usage/11758
Solution 19009: Calculating the Number of Days Between Dates on the TI-89 Family, TI-92 Family and Voyage™ 200.
...his function is NOT listed in the CATALOG. It must be entered manually from the HOME screen. • Press [HOME] • Type "dbd(01.0106,03.3006)" without the quote marks • Press [ENTER] The loan will accrue interest for 88 days before the first payment. Please see the TI-89 family, TI-92 family and Voy...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/19009
Solution 11743: Algorithm for the dotP() Function on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
...ctor multiplication. (Note that this definition reduces to the "usual" dot product if vec1 and vec2 are both real.) Inner products of complex vectors satisfy the following properties (Note: "dot" is used to represent the operation):1) vec1 dot vec2 = conj(vec2 dot vec1)2) (a*vec1 + b*vec2) dot ve...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/11743
Solution 16830: Availability of the TI-86 Advanced Statistics Program.
...tistics application is attached to this Knowledgebase at the top right of this page. Please note the Advanced Statistics application for the TI-86 requires activation after installation. For further questions regarding the TI-86 Advanced Statistics application, please reference the attached gui...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/16830
Solution 10465: Simplifications Running Slow on the TI-92 Family
...tional powers, and cancellation of hidden factors between non-numeric numerators and denominators. In some cases, intermediate expressions can become quite large despite modest inputs and final results. If a problem is taking an unacceptable amount of time: • Try using a different mode, such as...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/general-information/10465
Solution 12135: Error Invalid Polar Complex on the TI-89 Family, TI-92 Plus and Voyage™ 200.
... complex form. Refer to the tips provided below for inputting polar complex numbers. Complex numbers can be entered in two different polar forms.• reiq - Must be entered with the calculator in Radian mode. Inputting polar complex numbers while the calculator is in degree mode will trigger error m...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/troubleshooting-messages-unexpected-results/12135
Solution 22310: Correcting the Error Message Variable is Locked, Protected, or Archived on the TI-89 Family, TI-92 Family and Voyage™ 200.
...mily and Voyage 200 graphing calculator? The error, Variable is Locked, Protected, or Archived, appears when attempting to delete a locked program, equation, list, etc. from the var-link menu using a TI-89 family, TI-92 family or Voyage 200 calculator. Since the item to be deleted is locked, th...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/troubleshooting-messages-unexpected-results/22310
Solution 12156: Scaling the X-axis and Y-axis with the Same Units on TI-89 Family, the TI-92 Family, and the Voyage™ 200.
...ame when graphing a function on TI-89 family, the TI-92 family, and the Voyage 200? To make the scale on the x-axis and y-axis the same, use the ZoomSqr command. The ZoomSqr command displays the graph screen, adjusts the x or y window settings so that each pixel represents an equal width and heig...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/product-usage/12156
General Cell Questions
This StudyCards(tm) stack enables students to review general concepts regarding cells.https://education.ti.com/en/activity/detail/general-cell-questions
Vernier - Microscale Acid-Base Titration
In this activity, students' will use a pH sensor to determine the change in pH during a titration of a known concentration of NaOH and unknown concentration of HCl. Students' will determine the concentration of unknown HCl.https://education.ti.com/en/activity/detail/vernier--microscale-acidbase-titration
Vernier - Mix it Up: Combining Liquids of Different Temps
Students use the EasyTemp Probe to measure the temperature of hot and cold water before and after mixing. Students compare the mixing temperatures to a linear prediction. EasyData™ is needed for this activity.https://education.ti.com/en/activity/detail/vernier--mix-it-up-combining-liquids-of-different-temps
Diprotic Acid Lab and Easy Data
Maleic Acid gives an excellent diprotic acid titration curve showing both inflection points clearly for calculation of molecular weight.https://education.ti.com/en/activity/detail/diprotic-acid-lab-and-easy-data
Vernier - Freezing Temperature of Ocean Water
This activity makes use of the Temperature Probe to measure the temperature of water as it cools and freezes. Students' determine and compare the freezing temperature of fresh water and ocean water.https://education.ti.com/en/activity/detail/vernier--freezing-temperature-of-ocean-water
Problem-Solving Steps
Students learn the four steps of problem solving: Understanding the problem, making a plan, carrying out the plan, and evaluating the results. This activity helps students develop skills to solve problems.https://education.ti.com/en/activity/detail/problemsolving-steps
"Power"ful Patterns
Students investigate the relationship between multiplication with repeated factors and the use of exponents. Students will connect "powers of ten" to place value positions.https://education.ti.com/en/activity/detail/powerful-patterns
Number and Operations - 100 or Bust
Students explore the operations of addition, subtraction, multiplication, and division of whole numbers and integers.https://education.ti.com/en/activity/detail/number-and-operations--100-or-bust
Tiles in a Bag
Students explore probability and patterns in fractions, decimals, and percents by drawing tiles out of a bag.https://education.ti.com/en/activity/detail/tiles-in-a-bag
Random Remainders
Students explore the use of a calculator to investigate the relationship between divisors and remainders in whole-number division.https://education.ti.com/en/activity/detail/random-remainders
Picturing Percents
Students represent percents on a 10 X 10 grid. They use the grid and the calculator to generate patterns that lead to methods for calculating percentages.https://education.ti.com/en/activity/detail/picturing-percents
Ratios in Regular Polygons
Students use linear measurement and calculators to investigate the ratios between corresponding parts of regular polygons.https://education.ti.com/en/activity/detail/ratios-in-regular-polygons
Swing Thing
In this activity, students will construct a pendulum and create a motion plot for a swinging pendulum. They will also identify characteristics that affect a pendulum's motion.https://education.ti.com/en/activity/detail/swing-thing
An Average Lunch?
Students explore the meaning of the average (mean) value for a set of data.https://education.ti.com/en/activity/detail/an-average-lunch