How to insert an equation with integral

This tip display how to insert an equation for example, the Gauss's law, also known as Gauss's flux theorem.

How to add an equation in your document, see Working with Microsoft Equation.

To add integral form of the Gauss's law, do the following:

In the Professional present:

    1.    Create your own equation.

    2.    On the Equation Tools Design tab, in the Structures group, click the Integral button:

Structures in Word 2007

In the Integral list choose Contour Integral:

Integral in Word 2007

    3.    In the integral template:

  • In the lower box enter S.
  • In the upper box right-click and choose Hide Upper limit in the popup menu:
    popup
  • In the base right box enter E.

    4.    On the Equation Tools Design tab, in the Simbols group, in the list of symbols choose Bullet.

    5.    Then enter dA=.

    6.    On the Equation Tools Design tab, in the Structures group, click the Fraction button. In the Fraction list choose Stacked Fraction:

Stacked Fraction in Word 2007

    7.    Enter Q in the top of your fraction.

    8.    In the bottom of your fraction, do the following:

  • on the Equation Tools Design tab, in the Structures group, click the Script button.
  • in the Script list choose Subscript:
    Script in Word 2007
  • on the Equation Tools Design tab, in the Simbols group, in the list of symbols choose Epsilon,
  • in the lower box of the subscript enter 0.
Gauss's law in Word 2007

In the Linear present:

    1.    Create your own equation.

    2.    Do one of the following:

  • On the Equation Tools Design tab, in the Simbols group, click the More button:
    More symbols in Word 2007

    In the top of list of symbols choose Operators:

    Menu in Word 2007

    In the Operatiors list choose Countor Integral.
  • Symply enter \oint.

    3.    Enter _S. Then you enter a space key, this linear formula transformed to the professional format.

    4.    In the base box of integral, enter E.

    5.    On the Equation Tools Design tab, in the Simbols group, choose Bullet (or symply enter \bullet).

    6.    Then enter dA=Q/, choose Epsilon (or symply enter \varepsilon) and then _0:

linear part in Word 2007

Then you enter a space key, your linear formula transformed to the professional format.

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