Recent content by johnkubik

Thank you for that response. Very well written. The only problem I have conceptually is that if it is a unique value table, with each x,y pair having a unique z (and, although, the table I provided is not unique can we operate under the premise it is) how are we not able to say, ok... z is...

Thank you for the reply. Does setting y=0 and solving for x in terms of z mean that I have to just try every number over the range z=m to n? Or is there an easier way to determine what the answer would me?

Shoot, you are right... I meant to remove any duplicate values. But, even with the duplicate values what would be the method to solve for it? And yes, typo at y=0, x=0... it should be 2. I am at a conceptual block when it comes to understanding the methodology behind knowing what x,y pair...

Hey everyone! If you have a table that has distinct values for each x,y pair how would you determine the x,y values from the table? eg... *table formatting is not working out for me, I am sure you can look at it and see what I was aiming for* y 4 | 9 36 54 72 90...

Ended up doing a for loop to build a matrix. Then using the plot3. It is working correctly now.

No go, it still does stuff like: x:11.47 y:19.1 z:1.04e04 Annoying! I just want it to do whole numbers.

thanks for the response. I am going to give it a try.

Bump?

I am not sure how to handle the 7*x*y in order to get the quadratic. I tried using the solver applets in Wolfram alpha and it is having issues with it as well. Thank you for the quick response!

I would like my surfplot to only show whole numbers when I use the data cursor tool. Right now when I use the data cursor it shows x=1.058 y=3.5, z=9.5. How can I make it so it only evaluates my function over whole numbers, and displays only whole number answers? example...

Hey everyone, I was wondering what you could tell me about the relationship between hyperbolic paraboloids. I have listed a set of 3 equations and was wondering what I can do with them? Can I solve for z, can I get the intersection of the equations? Can I get generalized solution of any kind...

Yeah, not really sure where to even start. Would you be kind enough to just run through an example of it with some actual numbers? Thanks!

I think you are approaching the derivative wrong.

Basically, your second equation -- related to (**) -- into your first equation -- related to (*). So, you need to solve for A and B in this equation: Asin(t)+Bsin(t) = ∫(0->pi) [f(x) sin(x+t)]dxShould be relatively simple. Just take the derivative of each side with respect to x, or you can...

Would someone be kind enough to explain Jacobi sums in a simple manner using actual numbers. I have read over the math jingo 100 times and have no clue what it actually does. Thanks! Edit: Here is a link to the wiki of the Jacobi sums. http://en.wikipedia.org/wiki/Jacobi_sum