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\noindent
{\bf Math 125} \hfill {\bf Proficiency Quiz} (20 minutes)  \hfill %date 
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\noindent
{\bf Name} \underbar{\hskip 2in} \hfill
{\bf Student number} \underbar{\hskip 1in} \hfill
{\bf Quiz section:} \underbar{\hskip .5in}

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\noindent {\bf 1.} Simplify $\sqrt{8}+\sqrt{8}$.

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\noindent{\bf 2.} Evaluate 

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(a) $\  \sin {\pi\over 3}=$
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(b) $\  \cos 0=$ 
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(c)  $\ \tan {\pi \over 4}=$.

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\noindent{\bf 3.} Write down the double angle formula
for $\sin (2x)$ and $\cos (2x)$.

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\noindent{\bf 4.} Find the derivative of the following
functions: 

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(a) $\ \ln (x^2)$: 

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(b) $\ e^x \sin x $:

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(c) $\ {\tan x \over x+1}$:

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(d) $\ \sec x$:



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