prob-solv_04.1

prob-solv_04.1 - Class 04.1 Problem Solving Methods and...

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1 Problem Solving Methods and Algorithms Class 04.1
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2 Class Objectives Learn to apply the problem solving  process Learn techniques for error-free problem  solving
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3 Learning Objectives Define algorithm (a procedure with specific  instructions for solving a problem) Know what is meant by "decomposition" of  a problem Learn how to write algorithms using  flowcharts and pseudocodes Know what is meant by "top-down" design  method
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4 Engineers Solve Problems Problem solving is a powerful human activity. Computers are useful tools in problem solving, but humans solve problems employing the tools. It is impossible to teach specific facts that will always lead to a solution. The ability to solve problems comes from the experience of solving them. Many things must pull together as a team to solve a problem.
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5 Methods for Problem Solving If the problem has been very well defined, use algorithms - A set of well-defined rules for the solution of a problem in a finite number of steps These algorithms can be implemented by hand or, as generally in engineering, in computer programs. e.g., Solve: ax 2 + bx + c = 0 What should be the first step in an algorithm to solve this equation?
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6 Difficulties in Problem Solving Most common difficulty: failure to use known information . To avoid this problem: Write the problem in primitive or schematic form and sketch an accurate picture of the known information and relationships (where applicable). Transform the primitive statements to simpler language. Translate verbally-stated problems to more abstract mathematical statements using other statements, e.g., figures, diagrams, and charts.
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7 Note: 1 acre = 43,560 ft 2 Pair Exercise, Revisited (5 minutes ) Given : A student is in a stationary hot-air balloon that is momentarily fixed at 1325 ft above a piece of land. The pilot looks down 60 o (from horizontal) and turns laterally 360 o . Required
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prob-solv_04.1 - Class 04.1 Problem Solving Methods and...

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