Woo Kim Compare and Contrast essay Mrs. Williams Experiments in Writing January 20, 2009 Indoor Track vs. Outdoor Track As a student athlete, I participate in indoor track and outdoor track. Although both sports involve running, there is a huge difference
data stored in machine-readable form. Text les contain keyboard characters represented by one byte (8 bits) per character. Text, but not binary, les can be created and modied with text editors and printed on printers. Binary les can only be read an operat
Section 3
Files and File Management
In using Matlab, you will read and write several types of les, or collections of computer data. In this section, you will learn File management denitions and commands Saving and restoring information Script M-les Errors
-7.3464e-006 This error is indeed smaller than the bound shown above. We have used the denition: error = true value - calculated value This is also called the absolute error, although the qualier absolute may be used to indicate the absolute value of the
ans = 0.2222 ans = 0.5556 ans = 0.6667 ans = -0.6667
Accuracy, Precision, and Errors Accuracy is a measure of the nearness of a value to the correct or true value. Precision refers to the repeatability of a measurement, this how close successive measureme
The w.d width speciers are optional. If they are left out, default values are used. Examples: > fprintf(The temperature is 0 degrees F \n, temp) The temperature is 78.000000 degrees F > fprintf(The temperature is %4.1f degrees F \n, temp) The temperature
> temp = 78 temp = 78 disp: There are two general forms of the command disp that are useful in displaying results and annotating them with units or other information: 1. disp(variable): Displays value of variable without displaying the variable name. 2. d
For example: > format long > 5.78/57.13 ans = 0.10117276387187 > format short > ans ans = 0.1012 Thus, the short result is displayed as 0.1012 instead of 0.1011, which would have been the result if the long display had been truncated to four decimal digit
> 610./12. ans = 50.8333 Short oating point: When the result has more than three digits to the left of the decimal point, it is displayed in scientic notation (called the short e format). Scientic notation expresses a value as a number between 1 and 10 mu
> z = x*y z= 0 Here z should have been 2.5e-400, but due to exponent underow, the result is displayed as 0. Due to the nite accuracy of the representation of numbers in a computer, errors can be made in computations. For example, we know that 1 5 0.2 = 0;
If y is not a member of the set of oating-point numbers, we say that x is not representable in the oating-point number system. This can happen if x is too large, which is called overow error; or if the absolute value of x is too small, which is called an
ls -l: Display a list of names and associated access permissions, owner, size, and modication date of the directories and les in the present working directory. mkdir dir: Create the directory named dir in the present working directory. rm le: Delete le fr
3.2.1
Diary Command
The diary commands allows you to record all of the input and displayed output from a Matlab interactive workspace session. The commands include: diary le: Saves all text from the Matlab session, except for the prompts (>), as text in l
Kyle Daniele
9/6/08
In my four-year span in high school, I have only taken one science course per year. This seems minimal compared to others, but it is not as if science does not interest me. I love learning about the world around us and how it works. I
Good grief Charlie Brown! To think a loveable loser like you would have an enormous impact on me is unbelievable. In Charles Schulzs comic strip Peanuts, Charlie Brown is known as the everlasting case of bad luck and is taken advantage of only to become a
MyLife
QuickTime and a decompressor are needed to see this picture.
ByMichaelFaraday
OnSep.22,1791,Iwasbornin NewingtonButts,SouthLondon, EnglandwhereIlivedwithmyparents andthreeothersiblings.Wedidnthave muchmoney,soIhadtoeducatemyself andgetajobasabook
Kyle Daniele
10/26/08
This past summer I picked up a book that if I had to guess, I had not looked at in ten years. The last time I opened its pages, I gave up on reading it probably because it was too complicated for me to understand and/or I was more co
Kyle Daniele 1) From an early age, we have learned how to disguise ourselves. Weve learned to disguise our feelings, pretend to be someone were not, and to protect ourselves. It seems that we cheat in order to get something. For example, if someone was ca
Kyle Daniele
10/04/08 Isaac Newton was born on January 4th, 1643 in Woolsthorpe Manor, near
Lincolnshire, England. He came from a family of farmers. His father was a very successful farmer and made a lot money. Unfortunately, he died three months before h
6 s1 = -2 s2 = -3 Comments: % qroots: % allows a comment to be added format compact: Suppresses the extra lines in the output display a=1, b=5, c=6: Sets values of a, b, c, will display result x & y: Semicolon at end of command means these intermediate va
3.3
Script M-Files
For simple problems, entering commands at the Matlab prompt in the Command window is simple and ecient. However, when the number of commands increases, or you want to change the value of one or more variables, reevaluate a number of com
save data2.dat a -ascii This command causes each row of the array a (more on arrays later) to be written to a separate line in the data le. Array elements on a line are separated by spaces. The separating character can be made a tab with the command: save
c=6; x = -b/(2*a); y = sqrt(b^2-4*a*c)/(2*a); s1 = x+y s1 = -2 s2 = x-y s2 = -3 diary off Note that this is nearly the same as the display in the command window, with the exception that the Matlab prompt (>) is not included.
3.2.2
Saving and Retrieving Ma
Fixed-Point Numbers All computer instructions and data are represented and stored in binary (base 2) form. In the representation of xed-point numbers, the value of each digit in the number depends on its position relative to the xed decimal point. For exa
To solve, complete the square in s s+ b 2a
2
b 2a
2
+
c =0 a
Rewrite to leave only the term involving s on the left hand side s+ b 2a
2
=
1 2a
2
b2 4ac
Take the square root of each side to nd the solutions s1,2 = 1 b 2a 2a b2 4ac
There are two solutions,
When a command of this form is executed, the expression is evaluated, producing a number that is assigned to the variable. The variable name and its value are displayed. If a variable name is not specied, Matlab will assign the result to the default varia
3. Computational Method: Using the model developed above, expressions for the desired results can be obtained. The object will hit the ground when its vertical position is zero 1 y (t) = vt sin gt2 = 0 2 which can be solved to yield two values of time t =
Matlab cannot make sense out of just any command; commands must be written using the correct syntax (rules for forming commands). Compare the interaction above with > 4 + 6 + ? 4 + 6 + | Missing operator, comma, or semi-colon. Here, Matlab is indicating t