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How to do gauss jordan - Texas Instruments TI-30 XIIS Calculator

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You should consult a Linear Algebra book. Besides, these calculator cannot handle matrices of dimensions 4x4 or higher . With matrices of dimension 3x3 and less it is probably easier to use the Cramer rules directly.

Posted on Nov 07, 2012

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Colors on screen are warped like a rainbow. What may it be?


This is called gaussing, and is often caused by a magnet being too close to the screen. Unfortunately, most TVs do not have a de-gauss setting to reverse it.

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The screen is green all around and the middle is purple.


This is case of colored patches due to magnetic field,check and remove any magnetic thing close to the set, if the same problem is seen than switch off the set by main ON/OFF and switch on after about half hour,if still the problem remains than replace PTC used for de-gaussing,connected with de-gaussing coil mounted around the picture tube i.e electrically removes magnetic field every time TV is switched on.

Feb 06, 2011 | Sony KV-20TS32 20" TV

1 Answer

How do i use my ti 84 plus to solve problems with the gauss jordan method, to obtain the cofactors of a matrix, and many oder operations with matrices


Hello,
The matrix Math tools, are accessed by pressing [2nd][MATRIX] ->>[MATH]. Scroll the list to find all row permutations, etc.
Sorry but you will have to implement your Gauss-Jordan method yourself, and interactively.
Hope it helps.

Oct 07, 2009 | Texas Instruments TI-84 Plus Silver...

1 Answer

Top portion of the screen is some what green. Every thing else is OK


If you have green patching or anyother colour patching on the screen, your TV may need de-gaussing. The problem is caused when a magnetic field comes close to the TV. A simple solution can often be achieved with a fridge magnet, by moving it over the green patch and pulling it away in certain directions may solve the problem. A TV tech will have a de-gaussing coil which can solve the problem in a matter of minutes.

Sep 26, 2009 | Sylvania 6427TE 27" TV

1 Answer

1/2 the screen has a purple tint to it


It could be a purity error, this is where either the TV is sitting too close to something with a magnetic fied such as a loudspeaker from a sound system or just an internal build up of an excessive magnectic field. You will need to contact a repair centre as the TV requires to be de-gaussed which is a straight forward & quick repair,but needs a special tool (a de-gauss coil) to do the job. If this does not cure the fault, then the PTC device insode the TV may need replaced. In severe circumstances the cause can also be a fault with the CRT & this would need the tube replaced.

Aug 22, 2009 | Sanyo DS31520 31" TV

1 Answer

Picture has a a klidescope like picture to it.. is this the picture tube and can it be fixed


It could very well be a De-gauss fault, this is caused by magenetic build up. The solution is to try & gat access to a de-gauss coil, you do not have to remove the back of the TV to fix this. If this has no effect then the positor inside the TV at the power supply stage could be at fault or there is the possibility the shadowmask part of the tube is at fault which would result in a replacement tube.

Jul 20, 2009 | RCA Televison & Video

1 Answer

My Dell monitor gives sharp noise when started without connecting to the CPU.When system has started it works fine.Can I know how to solve it please ?


Hi!
I used to have a monitor similar to yours, from the noise you are describing is it like a crack? or an high voltage electrical spark/arc? (Mini lightening flash sound).
The Monitor I had De-gaussed each time it was switched on this is a weird thing that lines up the colour guns. If done whilst in use it gives the brief appearance of a shimmy/shake to the screen.
Have you a menu bar on or near the power on/ off switch? if you do try looking for De-gausse it may inadvertently become switched on to auto. You can De-gausse manually.
I do hope this helps.
Paul 'W'
Onyer~EDson(:0)~[><U.K.

Jan 12, 2009 | Dell E771MM 17" CRT Monitor

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