d^3y/dx^3 -2d^2y/dx^2+4dy/dx-8y=0
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Step-by-step explanation:
let y = ax³+bx²+cx+d
dy/dx = 3ax²+2bx+c
d²y/dx² = 6ax+2b
d³y/dx³ = 6a
Answer:
(6a)-2(6ax+2b)+4(3ax²+2bx+c)-8(ax³+bx²+cx+d)
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