Chapter 2.01

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QA: For problems 1,2,4,5,7,8 on this homework, say whether you think it is realistic and/or interesting.

QB: for problem 8: see the 2 and the 3 in the function, 2*sin(pi*t)+3*cos(pi*t)? Let's use them and compute sqrt(2^2+3^2)=sqrt(13)=3.6ish. Look at the graph of the function; how does 3.6ish relate to the graph?