I've developed the following videos to help you learn the software. The first 3 videos are intended to be watched first. The other videos can be watched pretty much in any order although you definitely want to work through video 6 before watching video 7. Did I mention that the videos are free? There are a few minor audio squeaks scratches, really in the videos and there is some hemming and hawing here and there. If someone wants to pay me substantially I'll edit that out.
If you are the assertive type I'd watch the first couple of videos and then start working your way through the menus in Winplot. If you like a little more direction, I'd work through the videos sequentially.
Follow these instructions to download and install the program on your home computer:. It can be downloaded from the website. Although the program is free, it is of top quality and easy to use. These instructions expand on those found in the program's help menus; they discuss some techniques of two-dimensional plotting, useful in an algebra or calculus class. It is assumed that the reader has already installed the program in Microsoft Windows, and is familiar with the basic workings of that operating system.
Notice how much the coordinates change. This will give you an idea of how "fine" the movement is. If you are using TRACE to estimate something, the small movements will help you figure out the accuracy of your estimate. ZOOM in times. Do a small movement and notice that there is a change in the accuracy. Question for anybody: Why? Question for advanced students: What other zeros are there and why aren't they x-intercepts, too? It's more time consuming, but you'll be certain.
Furthermore, there are algebraic methods taught specifically in some classes and you should check with your instructor about using this feature. The Fundamental Theorem of Algebra says that's the max, so we don't need to look for more. The dialog box appears, along with a cursor different from TRACE positioned on the left most x-intercept. The x-coordinate is in the box. Click on "next" to move to the next x-intercept.
Not hard, but remember, we have no idea of how accurate this is. Important Technical Notes: 1. ZEROS will report only on the x-intercepts in the current window. It will not automatically go looking for others. That "? In short, it's good to have options. In Calculus I, this is addressed in more detail. In Calculus I, you will study other methods for identifying extrema of functions. Graphing technology is not a substitute for methods taught by your instructor.
If in doubt, check with your instructor about appropriate use. ZOOM out until the bottom shows up. Click on "next" to find another extreme value. Look at this function. It has a local max and a local min, but you can't see them in this window. Try it before zooming out to see it better.
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