Hello, I'm having trouble with this exercise. Can you help me? Integral of (x* (csc x)^2)dx I'm using the uv - integral v du formula. I tried with u= (csc x)^2 and used some trigonometric formulas, but the expression became too complicated, I couldn't continue ...
March 15, 2007
can you show me the steps for this problem (2x)to the 4th power (3xcubed)squared I'd like to help you, but I'm not sure what this problem is supposed to be. You can use the symbol ^ when using exponents. For example, 2x to the 4th power can be typed 2x^4. Perhaps you ...
March 7, 2007
Can someone help me with this problem please? rationalize the denominator and simlify the answer: 5/2 + the square root of 3 Do you mean 5/(2 + sqrt 3) ? What you wrote could also be interpreted as 2.5 + sqrt 3. You need to be more careful to use parentheses when necessary to ...
March 1, 2007
Why is the waterfall model valuable in the management of information technology projects? Refer to "Arguments for the Waterfall Model" in http://en.wikipedia.org/wiki/Waterfall_model The waterfall model is a sequential software development model (a process for the ...
February 28, 2007
Can someone explain in easier terms the spontaneous process, entropy, and free energy. The textbook is hard to understand. Just a simple explanation. Thanks. Appreciate it! Free energy is the amount of energy that can be released in a chemical reaction. If free energy is ...
February 8, 2007
find the volumes
a box is 24 inches long,16 inches wide,and 10 inches deep.to two decimal places,how many quarts of watermelon seed are needed to fill the box? How many seeds are in a quart?
February 1, 2007
1/3 - 5/6 = 1/X SOLVE 1/3 - 5/6 = 1/X Let's remove the denominators by multiplying by 12X 12X*(1/3) - 12X*(5/6) = 12X*(1/X) Clear the fractions. 4X - 10X = 12 -6X=12 multipy by -1 6X=-12 Divide both sides by 6 6X/6 = -12/6 X = -2 Check my work.
January 16, 2007
physics.. important stuff !
i still do not understand?? can someone please help me out??? (a) why is the centripetal force neede to keep a body moving in a circular path? (b) In what direction does a centripetal force accelerate the body on whic it acts?? (c) Upon what threee factors does the centripetal...
January 15, 2007
physics - so important
In which of these cases is a youngster doing work in the school gymnasium? climbing up a rope lifting a set of weights from the floor to overhead PLEASE HELP ME? i NEED TO KNOW THiS FOR A TEST TOMORROW iN PHYSiCS & i CANT SEEM TO FiND THE ANSWER ANYWHERE & i HAVE SO MANY ...
January 15, 2007
In which of these cases is a youngster doing work in the school gymnasium? 1. climbing up a rope 2. hanging motionless from a chinning bar. 3. lifting a set of weights from the floor to overhead WHICH ONE & WHY? A BRIEF EXPLANATION WOULD BE NICE. thank you all =] I will be ...
January 14, 2007
French Essay, Needs Correcting Please
Parles-moi de toi! Je m'appelle Sarah et j'ai trieze ans; mon anniversaire est le dix-sept Avril, alors je suis belier. J'ai habite a Manchester quand j'avais trois ans, mais maintenant j'habite a Hattersley. J'ai ...
January 8, 2007
Write an equation for the problem. And solve it. Sierra caught 3 times as many fish as Lily. They caught a total of 20 fish. 3x*2=20 ---is this right? if it is plz help me solve it thanks u You can say 3n+n=20 n= lily's fish.
November 24, 2006
Please verify that the type of transport that supplies a cell with glucose is active transport, or is it another type of transport? I know that Binary Fission and Mitosis are similar becuse they produce new cells, how are they different? If Cytokinesis occured without mitosis ...
November 5, 2006
Was Mercury the first superconductor? No. http://www.jiskha.com/display.cgi?id=1161728962 see what happened in 1962 Thanks for your answer. Would you please let me know if steel is a superconductor? never mind, it is not.
October 24, 2006
Where do I start to prove this identity: sinx/cosx= 1-cos2x/sin2x please help!! Hint: Fractions are evil. Get rid of them. Well, cos2x = cos2x - sin2x, so 1-coscx = 1 - cos2x - sin2x = 1 - cos2x + sin2x You should be able to simplify this to 2*something squared. The ...
October 21, 2006
1. Calculate the heat (calories) produced by the solution of 3.75 g of NaOH Hint: Remember that the reaction is exothermic. 2. Calculate the number of calories that would be produced if one mole of sodium hydroxide was dissolved. (ÎHsolnNaOH) For #1. delta H(...
October 19, 2006
Using electronegativity arguments, classify the following diatomic molecules as nonpolar (N), polar (P), or ionic (I), and enter five letters in order (e.g. NPNPI, INPNP, etc) : NaF, HF, NaH, CaO, and F2. Look up electronegativity (EN)of each element and subtract to obtain a ...
October 5, 2006
A runner, beginning at rest, completed a 50 m run with a final speed of 6 m/s. Assuming constant acceleration. a) What was the average speed of the runner? b) What was the runner's time? c) What was the acceleration? a) half the final speed b) distance/(average speed) c) (...
October 2, 2006
State what conclusion can be made IFx=5 and the given statement is true IFx>x=z, then y=14z. I don't understand this part of your statement: "IFx>x=z," Please clarify this. If x>X-2, then y=14x Ok, I will suppose this is the question then "State ...
October 2, 2006
Find the slope and the intercepts of each line. g(x)=54x-1 x=-3 Help please! :) g(x)=54x-1 x=-3 I am assuming that you are trying to determine the value of g(x) when x equals -3. If g(x)=54x-1 , then g(-3)=54(-3)-1 Evalute and you have your answer. No, sorry. g(x)=54x-1 and x...
September 23, 2006
I'm not quite sure about these problems. I know how to do them, but it seems that I get the wrong answer. Maybe I'm supposed to get 'no solution' but I'm not sure. Could someone please help me with them? 5|6-5x|=15x-35 2|3x-7|=10x-8 1/4|4x+7|=8x+16 Ok for 5...
September 14, 2006
APPROXIMATELY, how much galloons of gas would it take to drive 4.4 miles? Does not have to be exact, just an idea.... The answer would depend on the average number of miles per gallon the vehicle gets. It might also depend on the road and weather conditios (going up or down ...
September 1, 2006