To create a formula that contains a function in a Word2010 document

In step 1th, open the Word2010 document window and switch to the Insert Ribbon. Click the formula button (not the Formula Drop-down button) in the symbol group, as shown in Figure 1.

Figure 1 Click the formula button

Step 2nd, create a blank formula frame in the Word2010 document, and in the formula Tools/Design Ribbon, click the Function button in the structure group. Functions such as trigonometric, inverse, hyperbolic, and inverse hyperbolic functions are displayed in the list of function structures that are open. Select the appropriate function form (for example, select "sine function") as needed, as shown in Figure 2.

Figure 2 Selecting a function form

Step 3rd, insert the function structure in the blank formula frame, click the Placeholder box and enter a value for the specific function, as shown in Figure 3.

Fig. 3 The specific numerical value of the input function structure

Tip: There are a number of commonly used function instances, such as tangent formulas, that are built into the function structure provided by Word2010. Users can select these function instances directly as needed, as shown in Figure 4.

Figure 4 Selecting the Word2010 built-in function instance