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$e^t\left [ \begin{array}{cc} -t&1+2t\\[2mm] 4t&1-2t \end{array} \right ]$

$e^t\left [ \begin{array}{cc} 1+2t&-t\\[2mm] 1-2t&4t \end{array} \right ]$

$\mbox{None of the above}$

$e^t\left [ \begin{array}{cc} 1+2t&-t\\[2mm] 4t&1-2t \end{array} \right ]$

$e^t\left [ \begin{array}{cc} -t&1+2t\\[2mm] 1-2t&4t \end{array} \right ]$

Test:	DELA-Section 3.11-Fundamental matrix solutions; e^{At}
Number of Questions:	7
Time:

	$\dot{{\bf X}}(t)\not =A{\bf X}(t) \ \mbox{and} \ \det {\bf X}(1) = {\bf 0}$
	$\dot{{\bf X}}(t)=A{\bf X}(t) \ \mbox{and} \ \det {\bf X}(0) \not = {\bf 0}$
	$\mbox{None of the above}$
	$\dot{{\bf X}}(t)=A{\bf X}(t) \ \mbox{and} \ \det {\bf X}(0) = {\bf 0}$
	$\dot{{\bf X}}(t)\not =A{\bf X}(t) \ \mbox{and} \ \det {\bf X}(1) \not = {\bf 0}$

	$\mbox{None of the above}$
	$\mbox{the product of} \ {\bf X}(t) \ \mbox{with its transpose at} \ t = 0 \ \mbox{must yield} \ e^{At}$
	$\mbox{the sum of} \ {\bf X}(t) \ \mbox{with its inverse at} \ t = 0 \ \mbox{must yield} \ e^{At}$
	$\mbox{the product of} \ {\bf X}(t) \ \mbox{with its inverse at} \ t = 0 \ \mbox{must yield} \ e^{At}$
	$\mbox{the sum of} \ {\bf X}(t) \ \mbox{with its transpose at} \ t = 0 \ \mbox{must yield} \ e^{At}$

	$\left [ \begin{array}{cc} e^t&e^{-t}\\[2mm] 0&e^t-e^{-t} \end{array} \right ]$
	$\left [ \begin{array}{cc} e^t-e^{-t}&e^t\\[2mm] 0&e^{t} \end{array} \right ]$
	$\mbox{None of the above}$
	$\left [ \begin{array}{cc} e^t-e^{-t}&e^t\\[2mm] 0&e^t+e^{-t} \end{array} \right ]$
	$\left [ \begin{array}{cc} e^t&e^t-e^{-t}\\[2mm] 0&e^{-t} \end{array} \right ]$

	$e^{2t}\left [ \begin{array}{cc} 1-4t&8t\\[2mm] 2t&1-4t \end{array} \right ]$
	$e^{2t}\left [ \begin{array}{cc} 1+4t&-8t\\[2mm] 2t&1-4t \end{array} \right ]$
	$e^{2t}\left [ \begin{array}{cc} 1+4t&8t\\[2mm] -2t&1-4t \end{array} \right ]$
	$\mbox{None of the above}$
	$e^{2t}\left [ \begin{array}{cc} 1+4t&8t\\[2mm] 2t&1+4t \end{array} \right ]$

Test!

	$e^{2t}\left [\begin{array}{cc}2&t\\[2mm]0&1\end{array}\right ]$
	$e^{2t}\left [\begin{array}{cc}1&t\\[2mm]0&1\end{array}\right ]$
	$e^{2t}\left [\begin{array}{cc}1&2t\\[2mm]0&1\end{array}\right ]$
	$e^{2t}\left [\begin{array}{cc}2&t\\[2mm]0&2\end{array}\right ]$
	$\mbox{None of the above}$

	$\left [\begin{array}{ccc}e^t&0&0\\[2mm]0&e^{2t}&e^{3t}-e^{2t}\\[2mm]0&0&e^{3t}\end{array}\right ]$
	$\left [\begin{array}{ccc}e^t&0&0\\[2mm]0&e^{2t}&-e^{2t}-e^{3t}\\[2mm]0&0&e^{3t}\end{array}\right ]$
	$\mbox{None of the above}$
	$\left [\begin{array}{ccc}e^t&0&0\\[2mm]0&e^{2t}&e^{3t}+e^{2t}\\[2mm]0&0&e^{3t}\end{array}\right ]$
	$\left [\begin{array}{ccc}e^t&0&0\\[2mm]0&e^{2t}&e^{2t}-e^{3t}\\[2mm]0&0&e^{3t}\end{array}\right ]$