Second-order linear ODEs
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1
The characteristic equation of y'' − 5y' + 6y = 0 is:
A.r² − 5r + 6 = 0
B.r² + 5r + 6 = 0
C.5r² − 6 = 0
D.r − 5 = 0
2
For y'' − 5y' + 6y = 0, the characteristic equation is:
A.r² − 5r + 6 = 0
B.r² + 5r + 6 = 0
C.r² − 6r + 5 = 0
D.5r − 6 = 0
3
What is the order of the differential equation d²y/dx² + 3y = 0?
A.1
B.2
C.3
D.0
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