Question about Sharp EL-531VB Calculator

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My calculator has a P at the side of the 0 and I cant remove it and I can't use the calculator while it is there.

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Hello,
Your calculator is performing calculations in the pental numeration system (base 5). To convert to decimal (base 10) press [2ndF][->Dec].
Hope it helps

Posted on Oct 01, 2009

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Posted on Jan 02, 2017

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1 Answer

My ti-nspire cant solve this second order differntial eq. x''+7x'+12x=4/k and x(0)=0 and x'(0)=4/k,t,x


You have to type:

deSolve(x''+7x'+12x=4/k and x(0)=0 and x'(0)=4/k,t,x)

Then enter. See captured image below


3_12_2013_8_08_53_am.jpg



3_12_2013_8_09_17_am.jpg

Jan 04, 2013 | Texas Instruments TI-Nspire CAS with...

1 Answer

Need help plugging 1+4700e^-4 into the calculator, I really would appreciate help! I cant seem to get the correct combination!


1 + 4 7 0 0 * (-) 4 2nd [e^x] =

(-) is the key to the right of the decimal point key.
e^x is the shifted function of the LN key on the top line.

Mar 24, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

I cant calculate 25+10%, when I try it the answer is 350. What is worong?


Try this:
2 5 * 1 0 SHIFT % +
where * is the multiplication key.

Pressing 2 5 + 1 0 SHIFT % calculates the percent change when 25 is added to 10, which is 350%.

Jan 04, 2011 | HP 10s Scientific Calculator

2 Answers

Need change battery (LR44) but cant open my HP10S. Yes, I took the 2 screws but I can not open the calculator. Thanks. Klaus


The calculator HP10s has 7 attachments. 4 in sides, 2 in the upper part and one in the lower part. First you need to remove the screws, then you have to push the attachment in the lower part and continue with the ones that are in the sides.

Nov 20, 2010 | HP 10s Scientific Calculator

1 Answer

How to remove memory from scienfic calculator


To clear a memory location, just store 0 in it.
0 [STO] M clears memory M
0 [STO] A clears memory A
0 [STO] B clears memory B
etc.

Oct 13, 2010 | Casio FX-115ES Scientific Calculator

1 Answer

I cant get a anser it comes out in scientific notation


Press [SHIFT][MODE] to enter the (SETUP) screen, then select the number to the left of FIX. Once you do you will be prompted to enter a number between 0 and 9. If you enter 4 all your decimal results will have 4 decimal digits. If you choose 0, all decimal numbers will be rounded to the nearest integer (whole number).

Regardless of the floating display mode (SCI, FIX or NORM) the calculator is configured for, the decimal results will be in SCIENTIFIC format if they are too small or too large.

May 21, 2010 | Casio fx-300ES Calculator

1 Answer

Fx-300ES Calculator: i cant get a anser it comes out in scientific nota...


Press [SHIFT][MODE] to enter the (SETUP) screen, then select the number to the left of FIX. Once you do you will be prompted to enter a number between 0 and 9. If you enter 4 all your decimal results will have 4 decimal digits. If you choose 0, all decimal numbers will be rounded to the nearest integer (whole number).

Regardless of the floating display mode (SCI, FIX or NORM) the calculator is configured for, the decimal results will be in SCIENTIFIC format if they are too small or too large.

May 18, 2010 | Casio fx-300ES Calculator

1 Answer

My problem involves converting in chemistry and im just trying to figure out how to do a problem 0.58 x 6.022 x 10 raised to the 23/ 1. I know how to calculate the problem just cant read the answer a more...


Press the keys:
. 5 8 * 1 2 . 0 1 x^-1 * 6 . 0 2 2 2ND [EE] 2 3 ENTER
and you should get 2.9E22. Do you get something different?

* is the multiply key on the right, between divide and subtract.

x^-1 is on the left, below MATH.

EE is the 2ND function of the , key, just above the 7.

Another way to calculate this is:
. 5 8 / 1 2 . 0 1 * 6 . 0 2 2 2ND [EE] 2 3 ENTER

This should give you the same result.

Mar 10, 2010 | Texas Instruments TI-83 Plus Calculator

3 Answers

Cant get M2 off of my TI-30XA calculator


Remove the six screws on the back cover. After the batteries are installed you need to reset the board. There is a little reset area that needs to be shorted to get the calculator back to normal. Look closely at the circuit board- You'll see a little circle next to the word reset. Its near the middle of the board. Wet your finger- press it on the circle. It should short. Blow it dry with your breath. It should work...

Feb 21, 2008 | Texas Instruments TI-30XA Calculator

1 Answer

It wont turn on


On TI-83 Plus and TI-83 calculators that have the newer flat screen (as opposed to the first generation TI-83 with the tilted screen):

1. Open the battery compartment cover
2. Install known working batteries
3. Using a voltmeter, insert probe ends into the holes right beneath the 2 center batteries and touch the circuit board on either side. One is a (+) side and the other is a (-) side, so both must be touched. Be careful to ONLY touch the copper square of the circuit board. If your voltage reads 0 or very low (1-2 volts) proceed to step 4. If your voltage reads about 6 volts, your problem lies elsewhere.
4. Using a voltmeter, insert probe ends on the bottom of the 2 outside batteries where the springs are visible. If voltage reads about 6 volts, proceed to step 5. If voltage reads 0, your problem is that the springs are not making good contact with the batteries due to corrosion or weak springs. You will need to clean them or get donor parts. Find a calculator with a broken screen that comes on and swap the back covers. Details on how to remove the back cover further on.
5. Using a T6 torx electronics screwdriver remove all 6 screws on the back and using a small phillips, remove the backup battery cover.
6. WARNING! Disassembling your calculator can cause unrepairable damage. Only proceed if you have no other options! Using a small flat electronics screwdriver, pry into the case on the side about 4 ridges up where there is a small hole. Pop both sides open and break case away from the bottom to the top- NEVER FROM SIDE TO SIDE. (Going from side to side can damage the I/O port.)
7. Look at the copper squares at the bottom of the board. You can see where 2 springs make contact from the back cover. Often this is dirty, corroded, or the springs are weak and not making contact. Clean this area with alcohol and gently scrape away any oxidation.
8. Put calculator back together and test. When a calculator will not turn on, this is likely the culprit.

I have fixed several calculators with this method.

Dec 16, 2007 | Texas Instruments TI-83 Plus Calculator

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