19. Solve the following differential equa- tions using classical methods. Assume zero initial conditions. [Review] dx a. +7x = 5 cos 2t dt d²x dx b. d1² + 6 + 8x = 5 sin 3t dt d²x dx C. dt² +8+ 25x = 10u(t) dt

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19. Solve the following differential equa-
tions using classical methods. Assume
zero initial conditions. [Review]
dx
a.
+7x = 5 cos 2t
dt
d²x dx
b.
+6.
+ 8x = 5 sin 3t
dt²
dt
d²x dx
C.
+ 25x = 10u(t)
+8-
dt² dt
Transcribed Image Text:19. Solve the following differential equa- tions using classical methods. Assume zero initial conditions. [Review] dx a. +7x = 5 cos 2t dt d²x dx b. +6. + 8x = 5 sin 3t dt² dt d²x dx C. + 25x = 10u(t) +8- dt² dt
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