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Precalculus, Single Variable Calculus Applets

• NEW!   Implicit Equations Grapher This applet graphs user-defined implicit equations of the form f(x,y)=g(x,y) in a user-defined x,y ranges. The syntax used for input is the same as graphing calculator syntax and the applet is very easy to use. The results are comparable with those provided by CAS like Maple.
   
• Matching Formulas to Data  Plot points, enter any parametric family of functions, dynamically change parameters while observing the changes in the least square error. Provides a quick and easy way of matching formulas to data points.
   
• Parametric Curves on the Plane  Graph parametric curves in rectangular as well as polar coordinates. Curves can be traced showing the direction of motion and the way a curve is traversed. The x and y ranges adjust automatically.
   
• Two Function Graphers  Graph two or three arbitrary functions at a time and trace them.
   
• Derivative Plotter  Enter a formula for an arbitrary function, the applet will plot it. Try sketching the derivative by drawing on screen. Reveal the real derivative dynamically by dragging a slider while the lineal element corresponding to the tangent line and its slope are displayed. Many demo examples.
   
• Accumulated Change and Antiderivative Plotter  Enter a formula for an arbitrary function, the applet will plot it. Try sketching the antiderivative with a given initial condition by drawing it on screen. Reveal the real antiderivative dynamically by dragging a slider while the area corresponding to the value of the antiderivative is dynamically shaded. The applet will draw antiderivatives of functions hand-drawn by the user!
   
• Sequences and Series of Functions Plotter  Enter a formula for a sequence or a series of functions, the applet will plot consecutive terms or partial sums at a click of a button. In particular, you can enter Taylor series or Fourier series. You can also enter a piecewise defined limit function to be plotted. Many demo examples are provided.
   
• Sequences and Series of Constants Plotter  Enter a formula for a sequence or a series of constants, the applet will plot consecutive terms or partial sums at a click of a button or automatically in the autorun mode. The applet illustrates many concepts associated with convergence and divergence of sequences and series, including the speed of convergence, subsequences, and Weyl's Theorem on Uniform Distribution. Examples and practice problems are provided.
   
• Familes of Functions and Points Plotter, Matching Functions to Data  This applet tackles a similar topic as Matching Formulas to Data above. This applet takes a different pedagogical approach, though. You enter data points and then choose from a list of families of functions: linear, surge, trigonometric, logistic, polynomial etc. to match the data points. Current values for parameters in each family are placed right in the formula for the family and change dynamically as the arrows above and below them are pressed. Thus, one level of abstraction with parameters, a, b, c, d present in each formula is removed.
   
• The Definite Integral in Terms of Areas  You will find this applet to be simple and appealing. The applet uses many examples to dynamically illustrate the Fundamental Theorem of Calculus and the meaning of the definte integral in terms of areas. The areas are shaded and the value of the integral changes as you drag a slider.