Equation Solver

(You need Java Runtime Environment (JRE) to run GraphFunc applet in this website)

We use the GraphFunc utility online to find the roots of the following equations:

Solution

1. Get into the website at http://graph.seriesmathstudy.com. The GraphFunc applet is loaded as shown in Figure 0. (Your browser needs to have JRE1.5x to run the applet in this website.)

Figure 0

a. Select Equation Solver item from the Functions dropdown list box to popup the Equation Solver window. See Figure 1.

b. Enter the expression x^2 – 3*x + 2 in the text field with the label marked Enter The Equation:.

c. Click the Solve button to get the roots, namely x1 = 1.0 and x2 = 2.0.

Figure 1 - has two roots.

2. 2. Follow the same steps described as above example. The roots of the equation are shown in Figure 2.

Figure 2 - has three roots.

3. The solution ofis shown in Figure 3.

Figure 3 – The equation has many roots. There are seven roots found over the domain from x = -10 to x = 10.

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