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ME 142
Engineering 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

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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)
given in radians
-converts radians to degrees where x is
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