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% exp(-t)
\SCALEVARIABLEfunction
{-1}{\EXPfunction}
{\NEGEXPfunction}
% exp(-t)cos(t)
\PRODUCTfunction
{\NEGEXPfunction}
{\COSfunction}
{\NEGEXPCOSfunction}
% 3t^2-2exp(-t)cos(t)
\LINEARCOMBINATIONfunction
{3}{\SQUAREfunction}
{-2}{\NEGEXPCOSfunction}
{\myfunction}
\myfunction{5}{\sol}{\Dsol}
If
\[
f(t)=3t^2-2\mathrm{e}^{-t}\cos t
\]
then
\[
\begin{gathered}
f(5)=\sol\\
f'(5)=\Dsol
\end{gathered}
\]
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