jedson303 said:I have an extcalc program on my computer. I can't seem to figure out how to get it to plug in "y" variables. (eg. x^2 + y^2) Your widget did this without any problem. (Looked great.) I am just getting underway with trying to understand -- in an elementary way -- certain areas of math based physics. I use a Linux platform. Ubuntu. Do I need a good tutorial on extcalc or would some other program that I could download meet my needs better?
jedson303 said:My real question is more elementary than what you suggest. The function I put up (if it is a legitimate fuction) was just meant as an example. I have completed a pre-calculus and a calculus course, but am pretty much of a beginner in all this. My goal is to be able to understand certain physics concepts in a mathematical way. I need a math program that can help me with this. Extcalc seemed a good prospect for this. But I couldn't get it to create any graph with a y variable. The graph plotter in your MHB Widgets does. So should I download and install a different program, or just learn more about how to use extcalc? I couldn't find any good tutorials on how to use it.
Jeson
jedson303 said:Let me just withdraw my question. I have googled all over the place, and extcalc seems to be what I need. I have never used a calculator this complicated before. So I was looking around for tutorials on using it. There don't seem to be any, so I'll just figure it out, bit by bit. Their "help" answers some of my questions. I can't pester you people with this kind of thing.
Jedson
That is awesome. Just what I need. All sorts of other useful things on that site as well. It really helps me if I can view the functions that I am concerned about as they spin themselves out in a 2 or 3 coordinate system -- as needed. Will also take a look at the other ones you mentioned.For three dimensional graphs, you might find the following tool useful. Graph: x^2-y^2[
jedson303 said:That is awesome. Just what I need. All sorts of other useful things on that site as well. It really helps me if I can view the functions that I am concerned about as they spin themselves out in a 2 or 3 coordinate system -- as needed. Will also take a look at the other ones you mentioned.
So that solves the immediate problem. Many thanks!
jedson
In estcalc, "y" variables are typically the dependent variables, or the outcome variables that you are trying to predict. These variables are usually represented on the vertical or y-axis of a graph.
Yes, you can plug in multiple y variables in estcalc. This can be done by using multiple regression analysis, where you can use several dependent variables to predict a single outcome variable.
No, not all "y" variables have to be numerical in estcalc. Some statistical software allows for categorical or binary variables to be used as dependent variables, as long as they are properly coded.
The interpretation of the results will depend on the specific analysis and model that you use in estcalc. Generally, you will want to look at the significance of the y variables and the coefficient values to determine their impact on the outcome variable.
Yes, you can change the order of the y variables when plugging them in estcalc. However, the order may affect the results and interpretation of the analysis, so it is important to carefully consider the order of the variables when conducting your analysis.