Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Define a sequence c0, c1, c2, … of pictures recursively as follows:
For all integers i ≥ 1
     Initial Conditions, c0 = an upright equilateral triangle ?.
     Recurrence Relation, ci = in centre of each upright equilateral triangle in ci-1, draw an upside down equilateral triangle ?  such that its corners touch the edges of the upright one.

  1. Draw the first 4 iterations, starting with c0. You may want to draw c3 large. Each should be a separate drawing.
    Get your work checked by an IA/TA/Instructor.
  2. Count the total # of triangles for each iteration in a).
    Note: Triangles can be of any orientation.
    Only count the individual triangles. Do not count a triangle which has triangles inside it.
  3. Determine T(0), the # of triangles in the 0th term.
  4. Determine the recurrence relation, T(n), that gives the # of triangles in the nth term, for n ≥ 1.
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