Software Systems Scientific Computing

New PDF release: A concise introduction to MATLAB

By William Palm III

ISBN-10: 0073385832

ISBN-13: 9780073385839

A Concise creation to Matlab is an easy, concise e-book designed to hide all of the significant features of MATLAB which are priceless for starting scholars. Thorough insurance of functionality handles, nameless capabilities, and Subfunctions. furthermore, key functions together with plotting, programming, information and version development also are all lined.

MATLAB is almost immediately a globally on hand common computational instrument for engineers and scientists. The terminology, syntax, and using the programming language are good outlined and the association of the cloth makes it effortless to find details and navigate during the textbook.

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Recall that typing a variable’s name at the Command window prompt causes MATLAB to display the value of that variable. Thus, do not give a script file the same name as a variable it computes because MATLAB will not be able to execute that script file more than once, unless you clear the variable. 3. Do not give a script file the same name as a MATLAB command or function. You can check to see if a command, function or file name already exists by using the exist command. For example, to see if a variable example1 already exists, type exist(‘example1’); this will return a 0 if the variable does not exist, and a 1 if it does.

MATLAB adds zeros to fill out the remaining elements. qxd 44 9/28/07 8:05 PM Page 44 CHAPTER 2 Numeric, Cell, and Structure Arrays MATLAB does not accept negative or zero indices, but you can use negative increments with the colon operator. For example, typing B = A(:,5:-1:1) reverses the order of the columns in A and produces B = c 3 0 0 0 4 7 6 d 1 9 5 Suppose that C = [-4,12,3,5,8]. Then typing B(2,:) = C replaces row 2 of B with C. Thus B becomes B = c 3 -4 0 12 4 3 9 5 6 d 8 Suppose that D = [3,8,5;4,-6,9].

5 ln(7) d. 5 log(7) Check your answers with a calculator. 17. The Richter scale is a measure of the intensity of an earthquake. The energy E (in joules) released by the quake is related to the magnitude M on the Richter scale as follows. 5 quake? * Use MATLAB to find the roots of 13x3 ϩ 182x2 Ϫ 184x ϩ 2503 ϭ 0. 19. Use MATLAB to find the roots of the polynomial 36x3 ϩ 12x2 Ϫ 5x ϩ 10. 20. Determine which search path MATLAB uses on your computer. If you use a lab computer as well as a home computer, compare the two search paths.

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A concise introduction to MATLAB by William Palm III

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