Exam 1 preparation

The exam will consist of 4 questions from which you must choose 3 to do.

It will be open book and 50 minutes in length.

Here are practice problems.

1. Use the McClaurin series expansion of $\cos(x) \,$ to thow that

$\lim _ {x \rightarrow \infty} \frac{1 - \cos(x)}{x^2} = 1/2$

1. $Let A = \left[ \begin{array}{cc} a & b \\ c & d \end{array} \right]$