ME 142Engineering Computation I

Excel Functions

Basic Math Operations

Basic Math Operators+ Addition

- Subtraction

/ Division

* Multiplication

^ Exponent

( ) Parenthesis, as need, follows algebraic precedence

Finding Functions

Formula Ribbon

Finding Functions

Insert Function button

Sum and AutoSum

Sum =SUM(range)

AutoSum Note auto-selection of row/column

Selecting Ranges

Use mouse to drag from top to bottom, or side to side

Select rectangular area by dragging to diagonal corners or using [shift] key

Select disconnected columns/rows by using [ctrl] key

Select a long row/column by using [ctrl][shift][end] key sequence

Basic Math Functions

SQRT(x) -returns the square root of a number ABS(x) -returns the absolute value of a number MAX(range) - returns the largest number in a set of values MIN(range) -returns the smallest number in a set of values COUNT(range) -counts the number of cells in a range

that contain numbers COUNTA(range)-counts the number of cells in a range that are

not empty STDEV(range) -estimates the standard deviation based

on a sample

Trigonometry Functions

Excel uses Radians by default in all trig functions Use RADIANS and DEGREES functions to

convert RADIANS(x) -converts degrees to radians where x

is given in degrees

DEGREES(x) -converts radians to degrees where x is given in radians

Trigonometry Functions

SIN(x) - returns the sine of an angle where x is in given in radians

COS(x) - returns the cosine of an angle where x is given in radians

TAN(x) - returns the tangent of an angle where x is given in radians

ASIN(x) - returns the arcsine of a number in radians, in the range –pi/2 to pi/2

ACOS(x) - returns the arccosine of a number in radians, in the range 0 to pi

ATAN(x) -returns the arctangent of a number in radians, in the range –pi/2 to pi/2

Logical Operators

IF(logical test, value if true, value if false) -checks if a condition is met, returns one value if True, another value if False

AND(logical1,logical2,…) -returns True if all arguments are true, otherwise returns False

OR(logical1,logical2,…) -returns True if any argument is true, returns False only if all arguments are False

NOT(logical) -returns True if argument is False, returns False if argument is True

Logical Operators

Time & Date Functions

TODAY() -returns the current date NOW() -returns the current date and time Format of the date/time can be modified