**OneNote is a useful application** for taking quick notes in the class, meeting or conference. But there is another **useful feature of OneNote**, it can help do **quick mathematical calculations** while taking notes.

**Perform Simple Calculations**

Solving **math problems or doing calculations is very easy in OneNote**. All you have to do is write down your equation like you would in a scientific calculator (in a single string without any spaces).

**Press the = sign following your expression and hit the spacebar**. OneNote solves the expression and displays the result after the spacebar.

**For Example**

**1)** Type a simple expression **like 52+8-20+17= and press spacebar**. The result will be displayed as 57.

**2)** You need to find the total labor cost of a project at $150 per resource for 15 resources. You can type in an expression as 150 * 15= and press Spacebar. The result will be displayed as 2250.

**Supported Mathematical Operators**

**OneNote supports all the basic arithmetic operators** like the plus (+), minus (-), multiplication (upper & lowercase x , *), division (/), percentage (%), caret (^) for exponential, and factorial (!).

**For example:**

4!= will give the result as 24.

5^2= will result in 25.

**Supported Math And Trigonometry Functions**

**OneNote** also supports a host of math and** trigonometry functions like ABS for calculating the absolute value of a number**, LOG to return the natural logarithm of a number, TAN to return the tangent of a number and so on. Simply type the code of the function that you intend to use (like ABS, LOG, TAN, etc) followed by the **number or variable in the parenthesis** followed by the equal sign (=) and spacebar. The result of the function will be displayed instantly.

The **log below gives the syntax to be used** to perform some of these operations:

ABS Returns the absolute value of a number ABS(number)

ACOS Returns the arccosine of a number ACOS(number)

ASIN Returns the arcsine of a number ASIN(number)

ATAN Returns the arctangent of a numbe ATAN (number)

COS Returns the cosine of a number COS(number)

DEG Converts an angle (in radians) to degrees DEG(angle)

LN Returns the natural logarithm of a number LN(number)

LOG Returns the natural logarithm of a number LOG(number)

LOG2 Returns the base-2 logarithm of a number LOG2(number)

LOG10 Returns the base-10 logarithm of a number LOG10(number)

MOD Returns remainder of a division operation MOD(number)

PI Returns the value of π as a constant PI

PHI Returns the value of φ (the golden ratio) PHI

RAD Converts an angle (in degrees) to radians RAD(angle)

SIN Returns the sine of the given angle SIN(angle)

SQRT Returns a positive square root SQRT(number)

TAN Returns the tangent of a number TAN(number)

**The Mathematics Ribbon**

**OneNote 2010 has a mathematics ribbon** which further helps in doing the math. For example, the ∏ or Equation option on the ribbon lets you insert common mathematical equations or create your own equations using a library of symbols.

Similarly the **Compute and Graph options** let you solve, integrate or differentiate equations and numbers and **create 2D and 3D graphs**.