Detailed method of setting function domain in geometric sketchpad

How to set the domain of the geometric sketchpad function? PHP editor Baicao will share with you the detailed method of setting the function domain in the geometric sketchpad to help you solve this common problem. Read the following content to understand the specific steps and precautions.

Method 1: Use the system coordinate system to construct the function image, and set the domain to control the size of the geometric sketchpad function image.

1. Select [Drawing] - [Draw New Function], in the [New Function] editor, edit the function [f(x)=x3-2x-1], and [OK] will appear. Infinite function graph.

2. Right-click the function image, select [Properties - [Drawing] - [Range], and modify the value range of x.

Tip: The x set by this method can change the size of the image by modifying the range. The disadvantage is that only closed intervals can be set.

Method 2: Use [0 multiplication] to modify the analytical expression of the function and change the domain of the function to achieve the image size of the specific function.

1. Select [Drawing] - [Draw New Function], in the [New Function] editor, edit the function [f(x)=x3-2x-1], and [OK] will appear. Infinite function graph.

2. Double-click the function analytical expression, and in the [Function Editor], modify the analytical expression to the style shown in the figure

Tips: On the basis of the original analytical expression, the calculation result is added to the calculation result equal to 0 or undefined (meaningless), which changes the domain of the new function analytical expression, thus realizing the drawing of a specific area. The purpose of function graphics. [0 multiplication] The following analytical expressions can be modified in many ways, and open intervals can also be set.

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