Download A Primer on Scientific Programming with Python by Hans Petter Langtangen PDF

By Hans Petter Langtangen

The publication serves as a primary advent to laptop programming of medical purposes, utilizing the high-level Python language. The exposition is instance- and problem-oriented, the place the functions are taken from arithmetic, numerical calculus, statistics, physics, biology, and finance. The e-book teaches "Matlab-style" and procedural programming in addition to object-oriented programming. highschool arithmetic is a required heritage, and it really is effective to review classical and numerical one-variable calculus in parallel with examining this e-book. along with studying the right way to application desktops, the reader also will clear up mathematical difficulties, coming up in quite a few branches of technological know-how and engineering, due to numerical equipment and programming. via mixing programming, arithmetic and medical functions, the booklet lays an effective origin for practising computational technology.

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Find the body’s position in Exer. 5 . . . . . . Add the effect of air resistance on a ball . . . . Solve an ODE system for an electric circuit . . . 74) . . . Explore predator-prey population interactions . . Formulate a 2nd-order ODE as a system . . . . Solve the system in Exer. 30 in a special case . Enhance the code from Exer. 31 . . . . . . . Make a tool for analyzing oscillatory solutions . . Replace functions by class in Exer. 32 . . . . Allow flexible choice of functions in Exer.

All input data must be assigned values in the program before the output can be computed. Input data can be explicitly initialized in the program, as we do in the present example, or the data can be provided by user through keyboard typing while the program is running, as we explain in Chapter 4. Output data can be printed in the terminal window, as in the current example, displayed as graphics on the screen, as done in Chapter 5, or stored in a file for later access, as explained in Chapter 6. The word user usually has a special meaning in computer science: It means a human interacting with a program.

You can simply replace the Idle instructions by similar actions in your favorite editor, Emacs for instance. First, create a folder where your Python programs can be located. Here we choose a folder name py1st under your home folder (note that the third character is the number 1, not the letter l – the name reflects your 1st try of Python). To write and run Python programs, you will need a terminal window on Linux/Unix or Mac, sometimes called a console window, or an MS-DOS window or command prompt on Windows.

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