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61 Cards in this Set

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public egr student drive
K:
Private egr student drive
W:
Equation editor in word
square root with fish
To read values from a text file into a matrix in Matlab
Matrix=readprn("filename")
Short cuts in Mathcad:
Matrix
Integral
deriv
CtrlM
shift&
shift?
Program extensions:
Word:
Autocad:
Excel:
Mathcad:
Matlab:
Notepad:
SolidWorks:
.doc
.dwg
.xls
.mcd
.m
.txt
T|F You dont have to assign a variable to a procedure in matlab
T
What color is quoted text?
purple
Is one number considered an array in Matlab
Yes
what character supresses out put in Matlab
semicolon
in this expression x=(:,1) what does the : mean?
It means take all the rows but only the first column
How is pi called in:
Matlab:
Mathcad:
Excel
Matlab: pi
Mathcad: ctrlshift p
Excel pi()
What command do you use to go to a cell in Excel?
cntrl g
For a range variable in Mathcad what does the second number represent?
It represents the second number in the sequence not the NOT the increment
What letter does the hexidecimal system go up to?
F
In excel what is the name of the bar in which the formula is typed
formula bar
What is a radix?
The base of a number system
Ex:binary, decimal, octal, hemidecimal
what is wrong with this statement in matlab:
lab04=fopen('loab04.out')
it is missin 'w' or 'a'
What do these symbols mean in matlab
== , and ~=
== means equal to
~= not equal to
symbols for not and and or
not: ~
and: &
or: |
Define

~ (NOT)
reverses value of logical quantity following the not operator
Example: ~(2.3>=5.0)
True or False
True(1)
If either side of | is true then
the whole thing is true
what is an example of an accumulator? (Lec12slide16)
c=c+1
What is a running sum initialized to?
0
What is a running product intitialized to in matlab?
1
True or False:
Two program lines are needed to switch the value of two variables (Lec16slide17)
False three are needed one has to be a temporary storage bin
What do each of these do in Matlab
\b
\f
\n
\t
\"
\b backspace
\f formfeed
\n new line
\t horizontal tab
\" inserts a double quote
What do these mean in Matlab:
'w'
'wt'
'a'
'r'
'w' or 'wt' opens a file for writing
(Existing files will be overwritten.)

'a' appends to existing file, opens for writing at EOF

'r' opens for read-only
What function in Matlab do you use to scan a script for a certain phrase or value
fscanf
closes a file previously opened
fclose
list three examples of Matlab control structures
if while for
does excel have a while loop built in?
NO
What formula would you use to determine the number of loop iterations
floor[(final-initial)/increment]+1
This command transfers to end of control structure.
If within a loop, it skips all remaining iterations
break
This command transfers to beginning of control structure.
If within a loop, it terminates current iteration only
continue
True of False
Matlab cannot find the median of an unsorted array
true
True/False:
A new function has to be created in the same folder that the m-script is that calls the new function
False it is just a recomendation because it is easier
True/False:
The new m-script file name and function name must be identical (for example, wow.m).
True
What is another name for a library function?
An intrinsic function
What is a new function called
A programmer defined function
What built in function will return the area under a curve in Matlab
quad('function',a,b)
Know the difference between Analytic and Symbolic integration
Analytic returns a value
Symbolic returns a statement of equality
What type of chart is associated with a bell curve?
Histogram
In Excel what are the functions for sample and population standard deviation?
sample: stdev
pop: stdevp
In Mathcad what are the functions for sample and population standard deviation?
sample: Stdev
pop: stdev
In Matlab what are the functions for sample and population standard deviation?
sample: std(X,0)
pop: std(X,1)
If no numbers in an array repeat do any of the three programs say there is a mode?
Matlab returns the smallest number the other two say no value
If an array is multimodal how does each program respond?
Excel returns the highest number. Mathcad returns 'multimodal'. Matlab returns the lowest number.
what does empirical mean?
originating in, or based on, observation (empirical data)
what does interpolate mean?
To estimate a value of a function or series
between two known values.
what does exterpolate mean?
To estimate a value of a variable outside a known
range from values within a known range,
by assuming that the estimated value follows
logically from the known values.
What is linear modeling?
A procedure to determine the linear equation
that best fits a set of data points.
Describe a Linear graph:
y=mx+b
X-Y
graph
Describe a Power graph:
ln y=m ln x+ln b
LogXLogY graph
Describe a exponential graph:
ln y = mx+ln b
SemiLog-Y graph
Describe a logrithmic graph:
y = m lnx + b
SemiLog-X graph
To get the best fit curve what number does |R| need to be closest to?
1
What command (in Matlab) do you use to find the roots of a polynomial?
What command do you use to find the coeffecient of the roots?
roots
poly
What is the result of a Dot Product?
A single value.
What is the result of a Cross product?
A vector