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{\large\bf Sample Equations} 
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{\bf 1.} $x' + y^{2} = z_{i}^{2}$

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{\bf 2.}  $-2 \, \ln |x-2| + 3 \, \ln |x-3| + C$

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{\bf 3.}  $y = k \, e^{x^2/2} - 1\;\;$ 

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{\bf 4.}  $\displaystyle \frac{dr}{dt} = \frac{1}{\pi}$

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{\bf 5.}  $[-1/\sqrt{3},0] \cup [1/\sqrt{3},+\infty[$ 

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{\bf 6.}  $\displaystyle \frac{\cos x}{2 \sqrt{\sin x}}$

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{\bf 7.}  $\displaystyle A = \int_0^1 \frac{\ln(x+1) \,
\sqrt{x^2 + 2x + 2}}{x + 1} \, dx$

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{\bf 8.}  $\displaystyle \frac{1}{2} \int_0^{\pi/3}
\sin^2 3\theta \; d\theta = \frac{\pi}{12}$

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