This is a good approach to questions of the form, What is the probability that ntuition will mislead you, but this formal approach gives the right answer every time 1. Find the sample space. ( Use a tree diagram. 2. Define events of interest. Mark leaves corresponding to these events 3. Determine outcome probabilities (a) Assign edge probabilities

Chapter 7 Topics Writing a Program Using Functional Decomposition Writing a Void Function for a Task Using Function Arguments and Parameters correctly

Why is the element stiffness matrix singular in a finite element formulation? 1. So that it can accomodate rigid element dis- placements without introducing spurious nodal 2 Because we made a mistake in the formula- tion the stiffness matrix should not be sin- g 3. Because we havent enforced any displace ment boundary conditions(it's a variational approach after all) Statement(1)

1 The pulverizer We saw in lecture that the greatest common divisor(GCD)of two numbers can be written as a linear combination of them. That is, no matter which pair of integers a and b we are given, there is always a pair of integer coefficients s and t such that