Step 1: Open the software and establish three parameters. Click [Data] in the menu above, and select [New Parameter] from the drop-down menu that pops up. In the pop-up window, change t1 to a, select no unit, the value is default, and then click OK. In the same way, the other two parameters b and parameter c are established. Let their value be 1 first, and then you can change the value of the parameter at will.
Step 2 Enter the function expression of the unary quadratic equation. Click the upper menu [Draw], select the Draw New Function option, and enter an expression in the pop-up dialog box. When entering the expression, pay attention to a few points, 1. When entering parameter A, click on parameter A in the upper left corner with the mouse, and then click the multiplier sign * to enter x, and the same goes for entering other parameters.
Step 3 Change the parameter value. After entering the expression, click [OK] to draw the figure shown in the figure below, which obviously has no intersection with the horizontal axis, and the corresponding quadratic equation does not have a real root. So to change the value of the parameter, double-click parameter a, a small window will pop up, enter the specific value, and the same goes for other parameters.
Step 4 Select the function tool. Click the [Customize Tool] button on the left toolbar, and select [Function Tool] in the pop-up shortcut option – the root of f(x)=0.
Step 5 Find the root of the equation. Click on the function parse expression, move the cursor, the root label appears, one root is displayed, and then click the expression again, move the cursor, another root label appears, and the second root appears.
Tips: The two real roots of such a one-dimensional quadratic equation are calculated, note that the values of the two x are the roots, and y is the ordinate. So how to find the root of a unary quadratic equation of arbitrary coefficients? The method is simple, you just need to double-click on the parameter, change the values of a, b, c, and the root of the new equation will be displayed immediately.
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