Troubleshooting — 319 discussions

I'm getting this weird LaTex bug that is really messing with my posts. Sometimes when I use the tex tags, I get this weird problem that no matter what I put inside them, the post will always display the a certain equation inside of the tags. For example: I am trying to edit my signature...

Hey all, My bibliography is not showing up in the PDF output, and I'm not sure why.. The bib file is in the same directory as the the main tex file. I am using the command: \documentclass[a4paper,twoside,11pt]{book} \usepackage{calc} \usepackage{setspace} \usepackage{graphicx}...

1. Homework Statement Hi, guys. I did a project but questions are killing me right now. I was going all the tutorials but I really have no idea. What we did was water rocket project. Here are the data Ttotal - avg. 9.96 sec. Avg. Apogee - 2.94 sec. 2. Homework Equations 3...

I have a TI 83 Plus, and i wanted to put some programs on my calculator. But the problem is, every time i install my TI connect software and Graph Link, and connect my calculator, it says that the driver not found. no matter what i do, it always says that driver not found. I go in the TI connect...

Hi, I'm having a lot of trouble trying to set up a process for calibrating turbine flowmeters for use in fuel rigs. Basically, I have a calibrated "master" flowmeter in series with the uncalibrated turbine flowmeter. I need a process that will give me the line of best fit across the...

std:: was not used in my previous experiences with programming in C/C++ but in xcode,it requires you to put 'std::' in front of both count and cin. i get an error that reads 'count' was not declared in scope. I am sure it is something very trivial but in insights would be appreciated.

I am allocating a value of 0.1 to a position in an array and it seems to be storing itself as 0.10000001. The problem is that once all the values in the array have reached 0.1 the average should be 0.1 and the loop stops, but as it is being stored as 0.1000001 the average is > 0.1 and the loop...

my power supply for the computer has just burnt resently for the second time in less than twom weeks i obviously have to buy anothr one but am a bit hesitant cause i can't figure out y they keep burning nd the fault is not with my plugs please help wer u can...!:biggrin:

I've been trying to get labels on boxplot() but I keep on getting syntax errors (mainly from me trying to hack my way through). Anyone know how to get labels to show up on any plot in R? *i was plotting 2 box plots together, so I don't know if that complicates anything

Homework Statement A 21.8 cm diameter coil consists of 18 turns of circular copper wire 1.70 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 8.15E-3 T/s. Determine the current in the loop. Homework Equations V=IR V=B/T * A * N...

Hi, I don't know if it's some mistake that I've been committing without realising it, but the Latex facility provided by this forum has given me no end of trouble. The following are two major problems I've faced: 1) Post preview generates a database error if there is too much latex in one...

i'm not sure if this is the right place but I'm trying to get my head around derive 6 and i have a couple of questions that don't seem to be coming out right... d^{2}y/dx^{2} + 8dy/dx + 16y = (4e^{-4x})(sinx+cosx)^{2} ; y(0)=y'(0)=0 so i inputed DSOLVE2_BV(8, 16, (4·^(-...

how come whenever I use latex...for some reason two of the latex have errors but the others always work when I preview...if I try deleting those two which have errors than some other two latex have errors then...why?any way to around the problem?

I'm having some trouble with LaTex. Here is the LaTex code: \frac{1}{q_{2}} = \frac{A q_{1} + B}{C q_{1} + D} And it should produce this: \frac{1}{q_{2}} = \frac{A q_{1} + B}{C q_{1} + D} Here, it's produced just fine. But in TeXnicCenter, it produces this instead...

It's been a year or two since I gave up, so I guess I'll subject myself again. Why am I unable to add funds to a Paypal account from a Credit card? It's like it has never occurred to them that anyone might want to do this. I am not about to attach my bank account information to anything...

Hi, I have a 3HP motor running continuously. After about 5 years it has stopped, flicked breaker and it continued. That happened a few times. More recently, now 10 years, it stopped and wouldn't start. I tried a few things, but turning the motors shaft seemed to get it to work when power was...

I'm not really new to Digital Electronics, but this is confusing the crap out of me. My school's started a DE class and at the moment we're getting all our equipment worked out and stuff, but for some reason NONE of our IC's work. We're using a 9-volt batter with a 7805 regulator for 5 volts...

I'm trying to use the nlinfit that MATLAB has to fit a sinc^2 function, but it keeps telling me that my coefficients have the wrong inputs. Here's basically what I am doing. %driver.m y = [intensity points]; %I actually have a bunch of intensity points, but I don't want to list them x =...

Hi everybody. I'm relatively new to C++ and am having an issue. What I need to do is take in several files and then do some data processing in each of them separately. I've tried to do this several ways and nothing has worked so far. Below is my last attempt. Basically, each file is...

I've been having difficulty with this problem and can't seem to find where to start. Any help would really be appreciated. A water insect maintains an average position on the surface of a stream by darting upstream (against the current) then drifting downstream (with the current) to its...

I have got a trouble with wave concept suppose wave is passing through a medium ( let it ,just started) suppose there are four points in the medium (particles) A,B,C,D as soon as A is disturbed even by an infinitesimally small distance , B experiences a forces (forces act...

So I bought the magic bullet blender last xmas and loved it. Used it for several months and then one day it just stopped working. The blender base that you press down on just didn't respond anymore. So I thought it died. I bought a new base on ebay and that didn't work either, so I thought...

Hello Everyone, I am trying to model a circuit using Orcad Pspice 9.2 I am trying to solve the time when the opamp saturates with maximum voltage operation of 10v and -10v. I am applying different voltages to the circuit, when I do the transient analysis, i am not getting the right time. For...

I was just reading about JFETs. I decided to try a circuit in multisim. Connected a N-channel jfet(2N4222), the source is connected to ground and the drain is connected to +12V. The gate is not connected. But there is a drain resistor(1K) connected between gate and ground to drain any gate...

I recently purchased an HP50G as I caught my TI-89 giving me incorrect results when solving simultaneous equations. However I can't get the 50G to do anything but tell me invalid syntax. I am using MSOLV as follows: MSOLV('[x/60+x/15+(x-y)/5-15=0][y/2+(y-x)/5+5=0][x,y] This is the syntax...

I have this in my .cc file: #ifndef __FASTJET_FASTJET_BASE_HH__ #define __FASTJET_FASTJET_BASE_HH__ // define this for easier readability (and obfuscation?) in // a range of places #define FASTJET_BEGIN_NAMESPACE namespace fastjet{ #define FASTJET_END_NAMESPACE} #endif //...

Homework Statement When I plug in all of the parameters for Halley's comet (from Wikipedia) into Kepler's third law a get a semimajor axis of 38.56 AU when it should be about 17? Can someone else try it and see if I am crazy?Homework Equations The Attempt at a Solution

I have a mini CD that works on other computers but it isn't working on mine. What do you think is the problem/ i have a Samsung DVD combo drive

I'm trying to get a fortran 77 program to run faster on a computer with a dual-core processer, so I'm trying to learn how OpenMP works. Unfortunately, I can't get the "hello world" file on the wikipedia page to compile. (Here's the code: PROGRAM HELLO INTEGER ID, NTHRDS...

:confused: hi there, I am building a hovercraft in my garage, so far it has gone perfect... until i get to the thrust part! for some reason i can't get the darn thing to move! for lift i have a kawasaki back pack blower pushing air down into an air mattress with holes punched in it and it...

my dvd writer seems to have gone mad. i burned 5 sony dvd's first n they all were fine, then the next one got thrashed and then 2-3 dvd's got wasted. again few next dvd's were fine. all my dvd's were of sony. things continued. now i have about 10-12 fine working dvd's and same number of "REALLY...

I am trying to work through some examples we have been given on flux out of a cube but am having difficulty in seeing how one one line of the answer becomes the next. The question is analysing the flux out of a cube by looking at each side individually and working out the surface integrals...

I recently purchased a few ULN2003A chips with the goal of eventually powering a stepper motor. So far I'm just testing out the chips, but I've run into a bit of a roadblock. I'm not quite sure how to use the chips. My setup is as follows: I have connected pin 8 (gnd) to gnd. I have supplied...

I'm generating a graph in gnuplot, using the postscript enhanced terminal setting, and trying to use symbols in the axes labels, then import the ps file into a latex document. The trouble I'm having is that the symbols in the ps document, don't show up properly in the final document after the...

My friend's p/c is unoperatable, she gets a notice stating mouse not connected. How can we correct this, thank you.

Hey, I haven't worked on an old computer in ages and I'm not sure if anything was around before PATA... I'm asking this because I see no PATA ports. All the ports with the right "size" have one extra pin. Do I just have bad cables?

igniter HELP! hi i don't no if I am doing this right but its my first post or whatever u call it ...anyways i need help making an igniter for fireworks. I saw a plane online i thought i could make farliy easily but I am confuses. Ok it said that if you have nichrome wire witch if u don't no is...

Well I though I would give it a shot posting here since no other computer or help forum seems to come up with any results. So here goes. About six months ago my motherboard on my desktop computer went dead suddenly. It was on one minute, I left it to eat dinner (no more than 15 min) I came...

I'm having some trouble on OS X following a tutorial that wasn't really meant for this language-OS combination. I'm using Xcode and the GLUT+OpenGL frameworks to compile the following code. [it's supposed to open a window and display a white square and triangle on a black backdrop.]: #include...

Hello, my colleague has a problem. He has a Monte Carlo simulation written in C. But his program gives different outputs in case he compile it using g++ or icc. He has nothing changed in his source. He is using standard random number generator drand() with initialization srand((unsigned) time...

When I using ajax to gather information from a webpage , it show ������� for the chinese character ， but when i run the webpage separately it can show the right character. I use responseText to gather information and use innerHTML to show on the webpage.What is the problem ?Do i need to set...

does LaTex work in the blogs in PF? it is not working in my blog? i tried the following: e^{i\pi} + 1 = 0 but it doesn't show on the blog. it says: "LaTex graphics is being generated. Reload this page in a moment." but it doesn't work even after i reload.

I wrote a little test program to try to figure out some problems I am having in another program I'm working on. # include <iostream> # include <string> using namespace std; void ahoy(string nameEntered) { cout << "Ahoy, " << nameEntered << "!" << endl; } int main() { string...

Great, i get home from work and find my fairly expensive dell precision machine, which i use as a web server, in some state. All three fans spinning very loudly at full power like a jet engine and the computer completely dead. When i restart the computer no characters are printed, the monitor...

I am sure it is not right, it seems able to go backwards far more than the other, and has less control, it has little pain until it goes backwards, the only outward sign of malfunction is that it is quite hot ? is this a doctor thing or wait and see thing?

Today in class we learned about diodes. Our prof explained to us that the only manual way to find the correct states of the diodes is guess and check. Each time, we ended with one correct circuit; that is Kirchoff's laws coincided with the diode constraints. Now I'm doing this circuit on my...

I have an interesting problem: I'm moved into university and people can't join custom games I create in warcraft 3. However, people CAN join games I create in starcraft. What would cause this? How do I fix it?

I have just replaced an inverter driven 3ph motor and wired it the same as the old one, it runs (cogs) backwards and is noisy. The motor is 230 v 3ph, it has 6 wires, yellow, black, white, violet, blue and brown. testing with ohm meter i have 45 ohms between yellow- black, white-violet and...

I just bought a new 750W powersupply off of newegg and put it in my computer and tried to fire it up. The fans on the back of my computer spun for a fraction of a second then everything turned off. My monitor kept going from green light to orange light for some reason (even when I turned off the...

Alright, so I seem to be having difficulty setting this one up. Here's the problem: http://synthdriven.com/images/deletable/help4.jpg" The way I began to go about it is as follows... \Sigma \vec{E}=\vec{E_{1}}+\vec{E_{2}}+\vec{E_{3}}=0...