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

By Hans Petter Langtangen

The publication serves as a primary creation to laptop programming of medical purposes, utilizing the high-level Python language. The exposition is instance- and problem-oriented, the place the purposes are taken from arithmetic, numerical calculus, facts, physics, biology, and finance. The publication teaches "Matlab-style" and procedural programming in addition to object-oriented programming. highschool arithmetic is a required heritage, and it's helpful to review classical and numerical one-variable calculus in parallel with analyzing this booklet. along with studying find out how to application pcs, the reader also will easy methods to clear up mathematical difficulties, bobbing up in quite a few branches of technology and engineering, by way of numerical equipment and programming. via mixing programming, arithmetic and clinical purposes, the booklet lays a high-quality beginning for working towards computational technology.

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1) for a specific choice of v0 , g , and t. 81 m/s2 makes the ball come back after t = 2v0 /g ≈ 1 s. This means that we are basically interested in the time interval [0, 1]. 6 s. 6**2 The four standard arithmetic operators are written as +, -, *, and / in Python and most other computer languages. 6**2. Our task now is to create the program and run it, and this will be described next. 2 About Programs and Programming A computer program is just a sequence of instructions to the computer, written in a computer language.

0)*C + 32 F = float(C)*9/5 + 32 In the first two lines, one of the operands is written as a decimal number, implying a float object and hence float division. In the last line, float(C)*9 means float times int, which results in a float object, and float division is guaranteed. A related construction, F = float(C)*(9/5) + 32 does not work correctly, because 9/5 is evaluated by integer division, yielding 1, before being multiplied by a float representation of C (see next section for how compound arithmetic operations are calculated).

0 The text on a line after >>> is what we write (shell input) and the text without the >>> prompt is the result that Python calculates (shell output). It is easy, as explained below, to recover previous input and edit the text. This editing feature makes it convenient to experiment with statements and expressions. 2342 We can now easily calculate an y value corresponding to another (say) v0 value: hit the up arrow key23 to recover previous statements, repeat pressing this key until the v0 = 5 statement is displayed.

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