I could have sworn that 2 days ago when I entered (-x)^2 i got x. Now when I enter the same thing I get 100. How do I fix this?

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Hello,

I do not know how you could have obtained the first result: The only possibility is that your X has been assigned a value of 1. Even if it was the case, the calculculator shown on the left (TI83PLUS SILVER Edition) does not do symbolic algebra.

For the second case, I suspect some way or other, the variable X store a value of 10. When you enter (-X)^2 the calculator retrieves the value stored in the variable X and performs the calculation, which does yield 100.

Note: to store a value in one of the 26 variables (letters) you proceed as follow

10 STO-> ALPHA X

The screen displays 10->X

When you press ENTER it displays 10.0..

To recall a value stored in the X variable you type

2ND RCL ALPHA X.

Hope it clarifies the question.

Posted on Aug 20, 2009

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Posted on Jan 02, 2017

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Dec 18, 2013 | Sony PlayStation 2 (PS2) Console

The position of the exponent in trig functions is an anomaly in mathematical notation. While the square of sin x is commonly written as

sin^2(x) ,

the square of any other function is written as f(x) ^2 . For example, you wouldn't write ln^2(2) if you mean the square of the natural logarithm of 2, instead you write it as ln(2)^2 or (ln(2))^2 .

The calculator works the same way. To calculate the square of the sine of 3, for example, press

SIN 3 ) ^ 2 ENTER

sin^2(x) ,

the square of any other function is written as f(x) ^2 . For example, you wouldn't write ln^2(2) if you mean the square of the natural logarithm of 2, instead you write it as ln(2)^2 or (ln(2))^2 .

The calculator works the same way. To calculate the square of the sine of 3, for example, press

SIN 3 ) ^ 2 ENTER

Nov 18, 2011 | Texas Instruments Office Equipment &...

Yes, your Ti 86 should solve square root problems. At the HOME screen press [CLEAR] [2nd] [x^2] which gives the (Square Root Symbol) to display at the Home screen. Then enter the number you want the square root of and close the bracket [ ) ] and, press the [ENTER] key.

You can even get the square root of complex numbers too. Select the correct complex format in the mode settings. For example: I'll do one in the rectangular form by enter a number as (a, b). I then will go to [2nd] [MODE] then [Arrow down] 3 times and make sure the RectC is highlighted and selected. Then quit out of the mode settings screen and enter [CLEAR] [2nd] [x^2] [ ( ] [9] [ , ] [ - ] [4] [ ) ] [ ) ] [ENTER], this displays the SQRT((9,-4)) equals (3, 2); The real part is 3 and the imaginary part 2.

You can even get the square root of complex numbers too. Select the correct complex format in the mode settings. For example: I'll do one in the rectangular form by enter a number as (a, b). I then will go to [2nd] [MODE] then [Arrow down] 3 times and make sure the RectC is highlighted and selected. Then quit out of the mode settings screen and enter [CLEAR] [2nd] [x^2] [ ( ] [9] [ , ] [ - ] [4] [ ) ] [ ) ] [ENTER], this displays the SQRT((9,-4)) equals (3, 2); The real part is 3 and the imaginary part 2.

Jan 09, 2011 | Texas Instruments TI-86 Calculator

Use parentheses. If you enter (-) 2 x^2, you're not squaring negative-two, but getting the negative of two-squared because the square operation binds tighter than negation. Enter the expression as ( (-) 2 ) x^2 to square negative-two.

Nov 17, 2010 | Texas Instruments TI-30X-IISTK Scientific...

Usually you do not use the prefix micro by itself, it must be followed by the name of a unit: 1 micrometer=10^-6 meter. This being said, you want to enter 100*10^-6 and raise it to power 2.

For this you can use the exponent rules.

In what follows, I will enter (10^-6)* 100 and square it. I will use the change sign (-) or [+/-] key

(-6) [2nd][10 to x] [*] 100 [=] [x^2] [=]

The first = calculates 100*10^(-6), the second [=] calculates the square of the number obtained after the first [=].

There are other ways that use parentheses to avoid ambiguities, but I think this is the safest one for you. Be warned that the result will most likely be displayed in scientific format, 1.00 -08 where the -08 will be raised with respect to the main level line. If not, the result will be 0.00000001

For this you can use the exponent rules.

- 100*10^-6=(10^2)*(10^-6)=10^(2-6)=10^-4; product of powers =>algebraic sum pf exponents
- (10^-4)^2=10^(-4*2) =10^(-8) ; power of power =>product of exponents.

In what follows, I will enter (10^-6)* 100 and square it. I will use the change sign (-) or [+/-] key

(-6) [2nd][10 to x] [*] 100 [=] [x^2] [=]

The first = calculates 100*10^(-6), the second [=] calculates the square of the number obtained after the first [=].

There are other ways that use parentheses to avoid ambiguities, but I think this is the safest one for you. Be warned that the result will most likely be displayed in scientific format, 1.00 -08 where the -08 will be raised with respect to the main level line. If not, the result will be 0.00000001

Feb 17, 2010 | Texas Instruments TI-30XA Calculator

Try this:

**NEC Electra Telephone System**

Changing the time on a Electra Elite & Professional system must be done from the "main" or primary phone. It is usually extension # 100. 1.- Press "FEATURE" 2.- Dial "9#" 3.- Enter hour and minute 4.- Press "RECALL" to change AM/PM setting 5.- Press "HOLD" to change the calendar setting 6.- Press "RECALL" to change the day of week 7.- Dial "#" to move the cursor to day of month field 8.- Enter day of month 9.- Press "RECALL" to select month 10.- Dial "#"to move the cursor to year field 11.- Enter last 2 digits of year 12.- Press "FEATURE"

Carl

Changing the time on a Electra Elite & Professional system must be done from the "main" or primary phone. It is usually extension # 100. 1.- Press "FEATURE" 2.- Dial "9#" 3.- Enter hour and minute 4.- Press "RECALL" to change AM/PM setting 5.- Press "HOLD" to change the calendar setting 6.- Press "RECALL" to change the day of week 7.- Dial "#" to move the cursor to day of month field 8.- Enter day of month 9.- Press "RECALL" to select month 10.- Dial "#"to move the cursor to year field 11.- Enter last 2 digits of year 12.- Press "FEATURE"

Carl

Nov 06, 2009 | NEC Electra Professional ETW-16DC-2

F4D0B72A 96F445CE, NOTE, i used the Mastercode for Dark Cloud =D not Dark Cloud 2

Apr 12, 2009 | Mad Catz GameShark2 for PlayStation2

Hello,

The square root has a dedicated key sequence [2nd][V square root symbol]

Square root of 21.2846 is entered [2nd][V square root] 21.2846 [ENTER] .

The result is`4.614.

I suspect you want to calculate the 4th root of 21.2846. If it is the case you enter that as

21.2846 [^](1/4) =2.148

Square root can be also entered as [^](1/2)

Cube root is entered as [^] (1/3)

..

nth root is entered as [^](1/n)

Hope it helps.

The square root has a dedicated key sequence [2nd][V square root symbol]

Square root of 21.2846 is entered [2nd][V square root] 21.2846 [ENTER] .

The result is`4.614.

I suspect you want to calculate the 4th root of 21.2846. If it is the case you enter that as

21.2846 [^](1/4) =2.148

Square root can be also entered as [^](1/2)

Cube root is entered as [^] (1/3)

..

nth root is entered as [^](1/n)

Hope it helps.

Nov 19, 2008 | Texas Instruments TI-86 Calculator

to set the time the instructions are on page 9 of the instruction manual in the getting started section.

in case you no longer have the manual....

1. press the tick/menu button twice.

2. press 0 and you hear 'to set the day and time press Star, to hear the day and time press Square.

3. press star. you hear 'please enter new day and time after the tone' enter the day (1=sun, 2=mon etc) enter the time using 24hr clock.

4. press the X/security button twice to exit.

hope this helps.

in case you no longer have the manual....

1. press the tick/menu button twice.

2. press 0 and you hear 'to set the day and time press Star, to hear the day and time press Square.

3. press star. you hear 'please enter new day and time after the tone' enter the day (1=sun, 2=mon etc) enter the time using 24hr clock.

4. press the X/security button twice to exit.

hope this helps.

Sep 26, 2008 | British Telecom Synergy 2110 Cordless...

Hello Donpd,

I have the solution to resolve the issue.

Perform the steps as provided below:

1. Close windows Sidebar. Right click on the Windows Sidebar notification area icon and click Exit.

2. Open the Start menu and click All Programs, then click Accessories. Right click on Command Prompt and click Run as administrator.

3. In the command prompt, type "regsvr32 msxml3.dll" without quotes and press Enter. Then click Ok.

4. In the command prompt, type "regsvr32 scrrun.dll" without quotes and press Enter. Then click Ok.

5. In the command prompt, type "regsvr32 jscript.dll" without quotes and press Enter. Then click Ok.

6. Turn Windows Sidebar back on.Check to see if Windows Sidebar is displaying correctly now.

I have the solution to resolve the issue.

Perform the steps as provided below:

1. Close windows Sidebar. Right click on the Windows Sidebar notification area icon and click Exit.

2. Open the Start menu and click All Programs, then click Accessories. Right click on Command Prompt and click Run as administrator.

3. In the command prompt, type "regsvr32 msxml3.dll" without quotes and press Enter. Then click Ok.

4. In the command prompt, type "regsvr32 scrrun.dll" without quotes and press Enter. Then click Ok.

5. In the command prompt, type "regsvr32 jscript.dll" without quotes and press Enter. Then click Ok.

6. Turn Windows Sidebar back on.Check to see if Windows Sidebar is displaying correctly now.

Sep 10, 2008 | Computers & Internet

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