Question about Texas Instruments TI-89 Calculator

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Everytime i try to differentiate or intergrate it never replies with an answer, only empty brackets "{ }". Say i want to differentiate (cos2x) how would i input it, because d(cos(2*x),x) isnt working...

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DelVar x , I think on your calculator x might be part of a list so, delete it at the main folder should work. If you hit NewProb before you start it will delete all single varibles for you so, you won't have conflicts using them. You have everything correct, its just your ti memory that missed you up.

Everytime i try to differentiate or intergrate - 8de8307.jpg

If for some reason this doesn't work, let know by adding a comment and I'll quickly help you so, you can get on and won't have hang ups.

Posted on Sep 25, 2009

  • Richard Klein
    Richard Klein Sep 25, 2009

    I'm a great source for Ti 89, Ti anything help. If in anyway you need help with your Ti89, from programming, APPS, anything, let me know by posting a comment gives you a hot line right to me. Keep this in mine. I want to see you go into take tests with no hang ups from your calculator. raklein62

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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1 Answer

1 - cos2x - sinx = 0


There are an infinite number of solutions for this. Among them are 0, pi, 2pi, 3pi, and 4pi (see a pattern?).

Jun 12, 2013 | Computers & Internet

1 Answer

HOW TO GRAPH COS2X


To find solution for your problem you have to type in Y editor y1=cos(2x)

Then graphing function. See captured image
3_16_2012_8_25_58_am.jpg

Mar 15, 2012 | Texas Instruments TI-84 Plus Calculator

2 Answers

Need to find and replace the DPFE-15 sensor. Dealership diagnosed when service engine light came on and saaid this is what needed replacing. Problem is I do not know where to find it on the engine.


Exhaust Gas Recirculation (EGR) System The exhaust gas recirculation (EGR) system is designed to:
  • reintroduce exhaust gas into the combustion cycle.
  • lower combustion temperatures.
  • reduce the formation of oxides or nitrogen (NOX).
The amount of exhaust gas reintroduced and the timing of the cycle varies by calibration. Timing and volume are controlled by the following:
  • engine rpm
  • engine vacuum
  • exhaust system back pressure
  • engine coolant temperature
  • air charge temperature
  • throttle position
The EGR valve (EGR valve) (9D475) is vacuum-actuated. The vacuum hose routing diagram is shown on the Vehicle Emission Control Information (VECI) decal. The EGR system is a differential pressure feedback EGR Sensor system. Differential pressure feedback EGR Sensor is a subsonic closed loop EGR system. The differential pressure feedback EGR system:
  • monitors EGR flow rate by the pressure drop across the metering orifice located in the EGR tube.
  • uses a differential pressure feedback EGR sensor as the feedback device.
  • uses the EGR valve only as a pressure regulator, rather than a flow metering device.
  • controlled pressure is varied by the valve movement using vacuum output of the EGR vacuum regulator solenoid (9J459).
  • allows for a more accurate assessment of EGR flow requirements.


Differential Pressure Feedback EGR Flow Diagram


aa3104a.gif

Differential Pressure Feedback EGR Sensor Removal
  1. Disconnect engine control sensor wiring (12A581) from Differential Pressure Feedback EGR Sensor.
  1. Disconnect Differential Pressure Feedback EGR Sensor hoses from EGR valve to exhaust manifold tube (9D477).
  1. Remove retaining nuts or bolts (depending upon application) and EGR Differential Pressure Feedback transducer.
Installation
  1. Follow removal procedure in reverse order.
  1. Tighten retaining nuts or bolts (depending upon application) to 5-7 Nm (45-61 lb-in).


    Differential Pressure Feedback EGR Sensor, 3.0L (2V) Engine


    aa0036a.gif



    Differential Pressure Feedback EGR Sensor, 3.0L (4V) Engine


    a23840a.gif


    Item Part Number Description 1 6049 RH Cylinder Head 2 - Differential Pressure Feedback EGR Sensor 3 - Nut (2 Req'd) 4 - Stud Bolt 5 - Bolt (2 Req'd) 6 - Differential Pressure Feedback EGR Sensor Bracket A - Tighten to 5-7 Nm (45-61 Lb-In) B - Tighten to 8-12 Nm (71-106 Lb-In)

    Engine Emission Control Component Location-3.4L SHO Engine


    a25013a.gif


    Item Part Number Description 1 95607-05200 Nut 2 - EGR Sensor Hose 3 - EGR Sensor Hose 4 95027-08016 Bolt 5 - Differential Pressure Feedback EGR Sensor 6 9J433 Differential Pressure Feedback EGR Sensor Mounting Bracket 7 9D474 EGR Solenoid Vacuum Valve (2 Req'd) 8 A4670 Vacuum Tube Assembly 9 9424 Intake Manifold 10 9J459 EGR Vacuum Regulator Solenoid A - Tighten to 5-7 Nm (45-61 Lb-In)
Hope this helps

Aug 14, 2011 | 1999 Ford Taurus

1 Answer

The machine makes a clunking noise and shakes all over while spinning, but spins fine and smooth if I run it empty. From seeing other answers sounds like the drum is detached from the solid mass. Do I go...


open the back and you will see 4 brackets and a band holding it balanced one of them is loose if it aint noisy with out anything in it thats good it means the band and the other brackets are fine so it must be the bracket that shook off or poss snaped whitch can be replaced at repairclinic.com

Jan 08, 2011 | Siemens WK61420GB Front Load Washer /...

1 Answer

Hp inkjet 2200 cartridge not empty but the printer say expired how do I get around this and bypass the expiration message on the printer and keep using my cartridge,thank you.


There's a button battery on the inside left side close to the front (as you face the printer). Turn off the printer and remove that using long nosed pliers. (For easier access, unclip the support bracket post ( that holds the top cover open) at the bottom. Everytime you turn on the printer, it will reset to Jan 2000.

Jan 21, 2010 | HP PSC 2210 All-In-One InkJet Printer

4 Answers

Abs light and brake light came on wont turn back off


There is a sensor at the top of the rear differential for the ABS system. That sensor went bad and replacing it took care of the problem. What caused mine to go bad was apperantly water got into the differential when launching and loading my boat. check to see if gear lube needs to be replaced also.
The answer above is perfectly correct. When the ABS sensor on the diff goes bad the speedo no longer will work, the odometer stops recording mileage and both brake and ABS light comes on. You also loose O/D or "Lock-up" in the torque converter. The sensor is inexpensive and can be changed in about 30 mins. Good Luck!
I second the second answer :) My ABS light was on, my BRAKE light was on, my CHECK ENGINE light was on, my SPEEDOMETER wouldn't work below 35 mph, then quit working alltogether. Once the speedomenter quit working the odometer and cruise control quit working. I replaced the rear differential mounted speed sensor ($33) and then reset the CHECK ENGINE light by disconnecting the positive battery cable for a couple of minutes. EVERYTHING then worked.
Replace rear differential speed sensor as follows:
a) remove parking brake cable bracket (1/2" socket)
b) remove speed sensor bolt (9/16" deep socket)
c) remove metal speed sensor cover
d) remove speed sensor from rear differential housing (use channel lock pliers, twist gently back and forth while applying upward pressure. Once the speed sensor has a small gap between it and the rear differential housing, insert a flat-blade screwdriver and gently apply upward pressure while gently twisting speed sensor back and forth.
e) disconnect speed sensor from speed sensor cable
f) lubricate new sensor with WD-40, insert into rear differential housing. It will NOT go in all the way by hand, so do NOT force it nor hit it with anything made out of metal.
g) replace metal speed sensor cover
h) Insert speed sensor bolt and tighten LIGHTLY until a small amout of pressure is felt. Tap speed sensor with rubber hammer until it pops into housing. Finish tightening of speed sensor bolt.
i) replace brake cable bracket, replace 1/2" nut and tighten
j) disconnect positive battery cable for 2 minutes, reconnect positive battery cable
h) start vehicle, enjoy,

Oct 21, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

Washer very noisy when agitating with a water load


It appears your vibration dampers have failed in this instance and should be replaced.

For replacement parts - head on over to PartSelect.com or RepairClinic.com and enter in your full model number for a full parts listing.
I recommend both sites because ...


FixYa has no affiliation with either site - I have been using and recommending them for years - trouble free.

PartSelect has a great schematic database for locating the part on your unit and great "testimonials" for each part that often times includes HOW-TO information.
RepairClinic has pictures of each part they sell and also a great how-to and troubleshooting for basic repairs.


If your unit has never been serviced - there should still be an original service manual enclosed in plastic taped to the inside of the shell.
In the service manual are Error codes, maintenance procedures, and troubleshooting steps you can follow.


Anything too complicated or beyond your scope should be handled by a professional.

If you think you want to tackle the repair - and have gotten stuck on a step - reply to your question and I will be glad to help you out.




Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question

Jun 07, 2009 | Washing Machines

1 Answer

NO VGA INPUT SIGNAL


hi im aleli can you give me a driver of c700 video controller,, tnx

Jan 08, 2009 | Compaq Presario C700T Notebook

1 Answer

"Too Few Arguments" Error


the problem is you haven't given it anything to solve...
always add a comma and the variable after any solve, differentiate or intergrate problem...
eg:
solve(x^2=4) is wrong!
intead put:
solve(x^2=4, x)

Hope this helps

Nov 03, 2008 | Texas Instruments TI-89 Calculator

1 Answer

Smell


Try lemon and baking soda scrub

Aug 25, 2008 | Refrigerators

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