Solution 22310: Correcting the Error Message Variable is Locked, Protected, or Archived on the TI-89 Family, TI-92 Family and Voyage™ 200.
...he 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, then the user will not be able to remove it f...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/troubleshooting-messages-unexpected-results/22310
Solution 12074: Troubleshooting a TI-89 that Displays Line 1111 Emulator.
...nowledge Base Search What can be done if Line 1111 Emulator is displayed on the TI-89? Line 1111 Emulator is a low level machine code error usually generated by errant assembly code. If Line 1111 Emulator is displayed, the calculator must be reset. The reset procedure will delete all ...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/troubleshooting-messages-unexpected-results/12074
Solution 11845: Resolving the Error Message "Illegal Instruction" on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
...ily, TI-92 family, and Voyage 200 graphing calculators? The error message Illegal Instruction on the TI-89 family, TI-92 family, and Voyage 200 is caused when a third party shell program tries to overwrite the pre-programmed code of the calculator. To resolve this error, the calculator will need...https://education.ti.com/en/customer-support/knowledge-base/other-graphing/troubleshooting-messages-unexpected-results/11845
Solution 12229: Differences Between the TI-10 and TI-15 Explorer™.
...ures, some major differences were necessary to make it grade appropriate. The TI-10 has fewer and larger keys. The keys for fractions, the [0.001] thousandths key, p, square root, [^] caret, and % have been omitted from the TI-10. The unit has only one operation key as opposed to two on the TI-1...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/general-information/12229
Solution 12219: Permitted TI Calculators for Society of Actuaries (SOA) Examinations.
...edge Base Knowledge Base Search What are permitted TI handhelds for Society of Actuaries (SOA) examinations? Candidates may use TI BA-35 Solar, BA II PLUS™, BA II PLUS™ PROFESSIONAL,TI-30X, TI-30Xa, or TI-30X IIS/B. Candidates using any of these calculators need not hav...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/general-information/12219
Solution 11667: Battery Types for the TI-30 II.
...ge Base Knowledge Base Search What type of battery is needed for the TI-30 II? The TI-30 II takes two LR44 model batteries. Comparable replacement models and brands are as follows:Duracell - LR44Eveready - 357Toshiba - LR44Seiko - SR44 Solution 11667: Battery Types fo...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/general-information/11667
Solution 11661: Discontinuation of Printer Display Calculators.
...ledge Base Search Have Texas Instruments printer calculators been discontinued? Over the past few years, Texas Instruments has increased its commitment to the educational technology marketplace. While the printer display product line has been successful for TI, it no longer supports TI l...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/general-information/11661
Solution 10483: Discontinued Texas Instruments Scientific Calculators.
...fic calculators have been discontinued. • TI-25X Solar • TI-30 STAT • TI-30X • TI-30Xa SE • TI-30Xa Solar • TI-31 • TI-34 • TI-34 II • TI-35 Plus • TI-35X • TI-36 Solar • TI-36X Solar • TI-36X II • TI-68 • TI-60X • TI-74 • TI-95 Users of these models may want to consider upgrading...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/general-information/10483
Solution 10482: Discontinued Texas Instruments (TI) Graphing Calculators.
... Replacement TI-80 TI-83 Plus TI-81 TI-83 Plus ...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/general-information/10482
Solution 12278: Calculating Secant, Cosecant, and Cotangent Trigonometric Functions on the TI-30X IIS/B.
...ic calculators do not feature the secant, cosecant, or cotangent trigonometric functions as separate keys. The properties of trigonometric functions must be used to calculate measurements using the below inverse trig functions: csc(x) = 1/sin(x) sec(x) = 1/cos(x) cot(x) = 1/tan(x) The example b...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/12278
Solution 40237: TI-30XII Solar and TI-30XII Battery displays Domain Error when Entering Certain Fractional Exponents.
...main error since they meet the restriction above: (-25)^(2/3) (-280)^(3/7) (-2)^(3/5) To workaround this limitation you can rewrite these functions using an identity x^(y/z) = z xRoot x^y: 3 xRoot (-25)^2 7 xRoot (-280)^3 5 xRoot (-2)^3 Please see the TI-30XIIS/B and TI-30XS MultiView guidebook...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/40237
Solution 12223: Calculating Mark-Up, Gross Profit Margin, and Percent Change on the TI-5018.
...edge Base Search How do I calculate the Mark-Up, Gross Profit Margin, and Percent Change on the TI-5018? The examples below will demonstrate using the Mark-Up key for calculations of mark-up, margin-up (or Gross Profit Margin), and percent change. Example: Using [MU] for Mark-Up: An ite...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/12223
Solution 12297: Squaring Negative Numbers on Texas Instruments Scientific and Elementary Calculators.
...e Base Knowledge Base Search How do I square a negative number on my scientific or elementary calculator? These calculators use an Equation Operating System (EOS™), which evaluates from left to right, allowing the user to enter numbers and functions in a straightforward...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/12297
Solution 10676: Turning Off The TI-1795 SV.
...ase Knowledge Base Search How can the TI-1795 SV be turned off? The TI-1795 SV does not have an off button. The calculator uses battery power as a backup in dim light, so that the calculator will always have some source of power during use. When not in use, the unit s...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/10676
Solution 12321: Difference Between [ (-) ] and [ - ] Keys on Two Line Elementary and Scientific Calculators.
...lators? There are two keys on TI's two line scientific calculators that appear to be similar. The [(-)] is the negate key, which is often mistakenly used as the subtraction key. The negation key converts a positive number into a negative number for the purpose of a particular calculation. The [...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/12321
Solution 10694: Clearing the Variable E on the TI-36X II.
...y of variable E on the TI-36X II? In addition to serving as a memory variable, variable E also stores a seed value to generate a random number when using the probability functions. The seed value changes randomly every time a random number is generated.Since the variable E is classified as a s...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/10694
Solution 10702: Unexpected Results When Sin(Pi) Does Not Return Zero on the TI-68.
... The answer displayed when calculating p radians is an approximation of zero. When solving trigonometric functions, very sophisticated algorithms are used to calculate the most accurate answer possible. With this in mind, plus the fact that it uses a 13-digit approximation of the irrational numb...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/10702
Solution 12225: Clearing DEG In The Display Of A Single Line Scientific Calculator.
...fic calculator? DEG (degrees) will remain on the display of the scientific calculator until the angle setting is changed.To change the angle setting, users will need to press [DRG] for RAD (radians) or GRADS (gradians).Please see the scientific calculator guidebooks for additional information. S...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/12225
Solution 12238: Clearing a Stored Operation on the TI-15 Explorer™.
...following keystrokes will clear a selected stored operation on the TI-15 Explorer: • Press [Mode] [▼] [▼]. • The display will read "OP1 CLEAR OP2". • Use either [◄] or [►] to select an operation. • With the cursor under the operation that is to be cleared, press [Enter]. The selected "OP" indicat...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/12238
Solution 18749: Boolean Logic Operations on the TI-36X II.
...ogical operations in octal, hexadecimal and decimal modes. The results are displayed in the current number base. These values (except for NOT and 2's complement) compare the corresponding bits of two values. Please see the below example: Example: Perform the operations 7 AND 15, 7 OR 15, and 7 XO...https://education.ti.com/en/customer-support/knowledge-base/scientific-elem-calculators/product-usage/18749