Use the graph apps to visualize and analyze the graphs for different types of functions.
FunctionApp
Using the Function App to properties of various functions of an independent variable and their corresponding graph can be investigated in detail:
In the symbol view the function terms are entered and the colors for the graph definded. The test functions are activated by tick box. 
In the Plot view the corresponding graphs are displayed and can be zoomed with the + and  keys. An analysis of the graphs can be done on different ways, for example,

In the Num view the corresponding value tables are displayed. With a flick of the finger on the multitouch display can be comfortably scroll through the tables of values. Using the "Zoom" function can be "refined" arbitrarily the value tables. 
Advanced GraphicsApp
With the help of this application you can draw graphs in the x / y plane. For definition either equations or inequalities can be used.
In the symbol view the defining equations are entered and the colors for the graphcan be set. The test functions are activated by tick box. 
In the Plot view the corresponding graphs are displayed. By touching the multitouch display, the graph can be adjusted arbitrarily. A zoom function is available via the + and  key . 
The Num view shows which pairs of points of the x / yplane corresponds to the graph (true / true). With a flick of the finger on the multitouch display can be comfortably scroll through the tables of values. Using the "Zoom" function can be "refined" arbitrarily the value tables. 
ParameterApp
Using the App Parameter display graphs that are defined by means of parametric representation.
In the symbol view, the x / y coordinates can be defined as a function of the parameter T and can be set colors for the graph. The test function can be activated by tick box. 
In the Plot view the graph is displayed. By touching the multitouch displays, the graph can be adjusted arbitrarily. A zoom function is available via the + and  keys . 
In the Num view for every parameter value T to display the corresponding x / y coordinates. With a flick of the finger on the multitouch display can be comfortably scroll through the table of values. Using the "Zoom" function, the value table are "refined" arbitrary. 
PolarApp
With the help of Polar App you can display graphs that are defined by polar representation.
In the symbol view the term for the radius as a function of the angle is defined and you can set the color for the graph. The test function is activated by selecting the hook. 
In the Plotview its graph is displayed. By touching the multitouch display the graph can be adjusted as desired. A zoom function is available via the + and  buttons. 
In the Num view, the polar coordinates are displayed. With a flick of the finger on the multitouch display you can comfortably scroll through the table of values. Using the "Zoom" function, the value table are "refined" arbitrary. 
SequenceApp
With the Sequence App you have the possibility to process a variety of growth processes or (transcendental) equations, such as x = cos x interactive. The consequences can be explicitly or recursively defined.
In the symbol view the desired sequences are defined and activated by the tick box. In the above example, the logistic function with parameter 2.75 and the start value of 0.1 is used as an iterator. 
In the Plot view, the iterations are illustrated graphically using a web diagram. By touching the multitouch displays, the graph can be adjusted arbitrarily. A zoom function is available via the + and  keys . 
In the Num view the results of each iteration are displayed. With a flick of the finger on the multitouch display can be comfortably scroll through the table of values. Using the "Zoom" function, the value table are "refined" arbitrary. 