Invision Graph Calculator
Invision
By James L. Chambers, copyright 1999.
Create graphs of mathematical expressions.
Isn’t everyone interested in numbers? No one can escape the mystery of numbers since it is so vital in everything we do. Satisfying this curiousity doesn’t have to be difficult with some help and some tools. One of Invision’s greatest advantages is its ease of use, lending itself to experimentation and learning. Invision Graph Calculator evaluates mathematical problems using high quality accurate graphs and has many features that are not available on many calculators, such as graph printing, portability, a full screen graph in color, written derivatives and integrals, illustrations, high derivative capability, and interactive mouse controls. Studying graphs and recognizing patterns in mathematics are basic skills which are important to have and develop. Recognizing that, Invision is designed to explore math, to study calculus concepts and to make it as easy to use as possible for everyone.
What are functions?
The mathematical expressions that Invision graphs are called functions. This is a fundamental but simple concept studied in calculus. It is easy to grasp for pre-calculus users. Without too much explanation and simply stated, a function is a means of associating each element of a set of elements to exactly one element in another set of elements. For example, an expression such as x + 1 can be a function. Functions are sometimes represented in notation as f(x) = x + 1 . So, the solution to the function of x for every x , is quite simply graphed as y , hence f(x) = y . A progression to more advanced mathematics can develop by understanding the graphs of these mathematical expressions.
Moving on to higher levels of mathematics for the more experienced, or an educational aid for students, other features are included in calculus such as derivatives, integrals, maxima, minima, arc length, inflections and roots. Invision uses mathematical methods that are taught in calculus courses so students can understand the results of the calculations. The exact differentiation and integration of functions are symbolically expressed and graphically illustrated. Also the full assortment of trigonometric and hyperbolic functions are available including the inverses. This calculating tool can be used in course work, or a plan of study can be directed by you, by following your own interests. If your study involves trigonometry or Algebra I, studying graphs are an important part of these subjects.