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AlexFokin [52]
3 years ago
7

PLZ NEED HELP LOOK AT PICTURE THX

Mathematics
1 answer:
baherus [9]3 years ago
5 0

Answer:

Answer A

Step-by-step explanation:

Sorry I'm very busy so no step by step

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3x^2+5x-28=0 solve this for me please
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Answer:

x= 7/3

x=-4

Step-by-step explanation:

Use the quadratic formula

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\dfrac{\mathrm d^3u}{\mathrm dt^3}+\dfrac{\mathrm d^2u}{\mathrm dt^2}-2u=0

This ODE has characteristic equation

r^3+r^2-2=(r^3-r)+(r^2+r-2)=r(r^2-1)+(r+2)(r-1)

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u(t)=C_1e^t+C_2e^{(-1+i)t}+C_3e^{(-1-i)t}

\implies\boxed{u(t)=C_1e^t+C_2e^{-t}\cos t+C_3e^{-t}\sin t}

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4 years ago
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