[VCLab-Main] [Software][HotEqn][Interactive Equations]

**dHotEqn** is able to replace variables in a given
equation by the corresponding right side of other equations located in any
applet on the same page. A combination of this mechanism can be of great help
in the understanding of mathematical problems since the flow of information and
data can be viewed immediately.

**Example:**

Given First use the left mouse button then use the
right mouse button.Also try to drag the mouse and inspect the Java Console. |
The example on the left side shows .yBy clicking with the left mouse button on the
applet window of equation ( are replaced by the corresponding right sides of equations
(yeqn1) and (eqn2).On a second click, the variable eqn2) will be substituted again.By clicking with the right mouse button on the
applet window of equation ( |

Let's have a look at the **HTML code** of this
example.

Given <applet code=dHotEqn.class height=40 width=60 name= |

**Description:**

The first two applets (**eqn1**) and (**eqn2**)
have the **leftside** and **rightside** parameters to define a valid
equation. **dHotEqn** combines both sides and adds a **"="** sign between
both terms.

The third equation (**eqn3**) uses the **prev0**
and **prev1** parameters to determine the equations where the missing
variables are located. The data are transferred using the browsers applet
context. For security reasons this mechanism does not work between different
frames.

[VCLab-Main] [Software][HotEqn][Interactive Equations]

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