2000 organizations, including eBay, Ericsson, and Lockheed Martin, now work smarter with Corporate Accounts. Save over 36%!

 

Having problems asking a question? Have a general question about Experts Exchange? Let us know!

 
Top Math & Science Solutions: 1 - 25 of 172
 
Hi all,   Long story short:  I'm trying to differentiate square roots, and I don't know where I'm going wrong. Example 1:  f ' (x) of (x/5)^1/2 -   I say (1/2)*(x/5)^-1/2 , which gives ... ...
Hi, I have a triangle, I know the measures of all its angles, and the length of the hypotenuse. I need to find the lengths of the other two sides. What formula can I use to get that? Tha...
Impossible to answer I know, - here is my list 1. Gauss 2. Euler 3. Riemann 4. Euclid 5. Hilbert 6. Poincare 7. Grothendieck 8. Ramanujan 9. Godel 10. Abel and yes, - no Newton,...
Is the Earth able to protect the dead bodies of Mankind, animals and birds in it itself since centuries without use of any chemical on the dead bodies?
I am taking a class that covers "set theory".    Please see attached JPG (question) and PDF (my answer). I have no trouble following the function "R" (first function).   As the PDF shows, t...
Hello I have just read that the relationship between dy/dx and dx/dy is that dy/dx = 1/(dx/dy) The book gave no explanation as to where this comes from. I would appreciate it if you coul...
How to use a CASIO calculator (fx-991W or fx-82MS) to calculate NORMINV(probability,mean,standard_dev)? Thanks!
How could Japan clean up after explosion but Russia could not.  Was it a different type of explosion? If this question is offensive, please delete question.
Hi I have been reading how to work out that the derivative of e^x = e^x. This is something i read -------------------------------------------------------------------------------------...
I have two or more data sets.  For each data set, I have: * The total number of points * The mean * The standard deviation I want to combine the data sets into one data set.  I know how ...
Hi Everyone;        For the purpose of properly selecting the right air conditioner for the house, I am needing to know how to measure ohms of a wall outlet.  I do have a digital multimeter...
Give today's medical technology, is there any reason why, in theory, a human head could not be kept alive and conscious. I cannot see why not. As far as I know, all that would be needed is a p...
Hello I know how to differentiate lnx from first principles but I've got stuck when i tried to do ln(1/x^3) Please could someone show me how to do it? If you could refer to the reference...
I have rows of data with which I'd like to forecast the next 2 periods of data for.  What is the formula to do this.  I'd like to do this in excel all on one row as shown below: Item     P1...
I have to figure out the minimum number of surveys needed to attain a confidence level of 95% I have several organzations, each with a different population.  For example: Arizona: 523 New...
I am new to statistics and have been doing some reading about how regression analysis can be used to determine the strength of correlations. How would I set up AND read an analysis to dete...
Hi Everyone;         I am wondering what the difference is between the Swine Flu and Seasonal Flu.  Are they different in terms of virus strains?  For instance, is there just one viral stra...
Hi I think i have found another typo in my book and would just like to check The equation is     5(x-3)(x+1)        -     3(x+1)                             -----------------           ...
I have the following basic 2 variable linear problem that I am using as an example, this will be expanded to more variables. lets say I have the following two equations: -100 = x - y 100 ...
how do I calculate the miles driven and gallon use to get miles per gallon
i have a set of numbers from 5- 15 of them is there a mathematical way to calculate the lower/upper quartiles for a box plot in statistics? i am making a computer program but i keep gett...
I know it's a silly question, but I still want to know if there any good approach to become a good researcher? I'm a master degree student now, major in network security. I'll appreciate any r...
Take a look at the last matrix on this page please: http://www.codeguru.com/cpp/misc/misc/math/article.php/c10123__3/ I'm not clear what it actually does, despite having read through the a...
hi , i am stuack on this one...i have a block of wood hollowed out to give wall thickness of 1 inch. the dimensions are : height 1 ft , width 2ft , lenght 10ft. Specific weight is 40 lb / ...
I am trying to write an algorithm that will solve the following equation 824 = 16x2 + 16x2 + 26x2 16xsquared + 16xsquared = 26xsquared. How do I solve this?