Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
13th Edition
ISBN: 9780134875460
Author: Glenn Brookshear, Dennis Brylow
Publisher: PEARSON
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Chapter 10, Problem 29CRP
Program Plan Intro

Hidden surface problem:

  • In the pictures with non-transparent objects, the objects cannot be viewed that are behind from objects nearer to eye.
  • These hidden surfaces are to be removed for getting realistic screen image.
  • The removal of such surfaces is known as hidden-surface problem.
  • The methods used for removing hidden surface problem includes:
    • Object space method:
      • It is executed in physical coordinate system.
    • Image space method:
      • It is executed in screen coordinate system.
  • To display a 3D object on 2D screen, the parts visible from chosen viewing point are to be identified.

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We are considering the RSA encryption scheme. The involved numbers are small, so the communication is insecure.  Alice's public key (n,public_key) is (247,7). A code breaker manages to factories  247 = 13 x 19  Determine Alice's secret key. To solve the problem, you need not use the extended Euclid algorithm, but you may assume that her private key is one of the following numbers 31,35,55,59,77,89.
Consider the following Turing Machine (TM). Does the TM halt if it begins on the empty tape? If it halts, after how many steps? Does the TM halt if it begins on a tape that contains a single letter A followed by blanks? Justify your answer.
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Computer Science: An Overview (13th Edition) (What's New in Computer Science)

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