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61 Cards in this Set
- Front
- Back
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public egr student drive
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K:
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Private egr student drive
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W:
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Equation editor in word
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square root with fish
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To read values from a text file into a matrix in Matlab
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Matrix=readprn("filename")
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Short cuts in Mathcad:
Matrix Integral deriv |
CtrlM
shift& shift? |
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Program extensions:
Word: Autocad: Excel: Mathcad: Matlab: Notepad: SolidWorks: |
.doc
.dwg .xls .mcd .m .txt |
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T|F You dont have to assign a variable to a procedure in matlab
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T
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What color is quoted text?
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purple
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Is one number considered an array in Matlab
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Yes
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what character supresses out put in Matlab
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semicolon
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in this expression x=(:,1) what does the : mean?
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It means take all the rows but only the first column
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How is pi called in:
Matlab: Mathcad: Excel |
Matlab: pi
Mathcad: ctrlshift p Excel pi() |
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What command do you use to go to a cell in Excel?
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cntrl g
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For a range variable in Mathcad what does the second number represent?
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It represents the second number in the sequence not the NOT the increment
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What letter does the hexidecimal system go up to?
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F
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In excel what is the name of the bar in which the formula is typed
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formula bar
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What is a radix?
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The base of a number system
Ex:binary, decimal, octal, hemidecimal |
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what is wrong with this statement in matlab:
lab04=fopen('loab04.out') |
it is missin 'w' or 'a'
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What do these symbols mean in matlab
== , and ~= |
== means equal to
~= not equal to |
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symbols for not and and or
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not: ~
and: & or: | |
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Define
~ (NOT) |
reverses value of logical quantity following the not operator
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Example: ~(2.3>=5.0)
True or False |
True(1)
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If either side of | is true then
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the whole thing is true
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what is an example of an accumulator? (Lec12slide16)
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c=c+1
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What is a running sum initialized to?
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0
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What is a running product intitialized to in matlab?
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1
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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
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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 |
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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 |
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What function in Matlab do you use to scan a script for a certain phrase or value
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fscanf
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closes a file previously opened
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fclose
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list three examples of Matlab control structures
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if while for
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does excel have a while loop built in?
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NO
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What formula would you use to determine the number of loop iterations
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floor[(final-initial)/increment]+1
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This command transfers to end of control structure.
If within a loop, it skips all remaining iterations |
break
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This command transfers to beginning of control structure.
If within a loop, it terminates current iteration only |
continue
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True of False
Matlab cannot find the median of an unsorted array |
true
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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
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True/False:
The new m-script file name and function name must be identical (for example, wow.m). |
True
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What is another name for a library function?
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An intrinsic function
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What is a new function called
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A programmer defined function
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What built in function will return the area under a curve in Matlab
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quad('function',a,b)
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Know the difference between Analytic and Symbolic integration
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Analytic returns a value
Symbolic returns a statement of equality |
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What type of chart is associated with a bell curve?
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Histogram
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In Excel what are the functions for sample and population standard deviation?
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sample: stdev
pop: stdevp |
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In Mathcad what are the functions for sample and population standard deviation?
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sample: Stdev
pop: stdev |
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In Matlab what are the functions for sample and population standard deviation?
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sample: std(X,0)
pop: std(X,1) |
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If no numbers in an array repeat do any of the three programs say there is a mode?
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Matlab returns the smallest number the other two say no value
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If an array is multimodal how does each program respond?
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Excel returns the highest number. Mathcad returns 'multimodal'. Matlab returns the lowest number.
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what does empirical mean?
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originating in, or based on, observation (empirical data)
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what does interpolate mean?
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To estimate a value of a function or series
between two known values. |
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what does exterpolate mean?
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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. |
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What is linear modeling?
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A procedure to determine the linear equation
that best fits a set of data points. |
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Describe a Linear graph:
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y=mx+b
X-Y graph |
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Describe a Power graph:
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ln y=m ln x+ln b
LogXLogY graph |
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Describe a exponential graph:
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ln y = mx+ln b
SemiLog-Y graph |
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Describe a logrithmic graph:
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y = m lnx + b
SemiLog-X graph |
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To get the best fit curve what number does |R| need to be closest to?
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1
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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 |
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What is the result of a Dot Product?
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A single value.
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What is the result of a Cross product?
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A vector
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