The Differential Equation
−2x′′′+2x′′+18x′−18x=0
can be expressed as a system of first order equations by letting x1=x, x2=x′, x3=x′′.
The system has the form X′=AX where A has entries:

Question

The Differential Equation 
−2x′′′+2x′′+18x′−18x=0 
can be expressed as a system of first order equations by letting x1=x, x2=x′, x3=x′′. 
The system has the form X′=AX where A has entries:

anonymous · Answer

waaaat? why so many students ask about this stuff today? @UsukiDoll  can you help?

usukidoll · Answer

but we need your advice lol

usukidoll · Answer

XD share the knowledge before I eat lunch

usukidoll · Answer

at least after #8 4.4 I got two sections done :D