Can someone help me with ODE45 function

2020 10 10
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更新时间：2020 10 10
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I have the differential equation in the attached pdf. I would like to change into state variable form so I can use ODE45 to numrically integerate it, but I don't know how to do it. I hope someone can help me.

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Star Strider
Star Strider 2020-10-10

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I read it diferently:
f = @(t,v) (489.369-0.001464*v^2)/(-1.44*t+10) - 9.81

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Walter Roberson
Walter Roberson 2020-10-10

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f = @(t,v) (489.369-0.001464*v^2)/-1.44e+10 - 9.81
ode45(f, tspan, v0)

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