Differential Equations

Advanced calculus topics from Diff EQ go here.
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Ted
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Mupad: ode::solve showing error" equation is not ordinary"
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Denis
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Hi need some help differentiating please! How can I do this ?
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Dr.Peterson
Dr.Peterson
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Differentiate how in the heck do you do this?
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25
HallsofIvy
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Differentiate equation :)
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19
Subhotosh Khan
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Differentiate equation
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22
Subhotosh Khan
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Can you show me how to do this?
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21
Subhotosh Khan
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Help with matrix differential equation: repeated eigenvalues!
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122
HallsofIvy
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Querie on sketching direction field.
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266
MarkFL
MarkFL
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Mathematical models and numerical methods: "A motorboat starts from rest..."
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592
ken_165
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Maxwell Equations
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419
topsquark
topsquark
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Calculating using dv/dt = dh/dt * dv/dh to find dv/dh and then integrating the answer to get a line
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168
HallsofIvy
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a help for the equation
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84
MarkFL
MarkFL
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Power series solution help
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2
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70
promitheus
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Remove function from differential system d^2x/dt^2 + a*dx/dt = j, dj/dt = -b*j - dx/dt + u(t)
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90
HallsofIvy
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Is there an analytical solution to dCs/dt = gCs(1-Cs/Csmax) - K*(X/Y + c/exp(Yt))? (nonlinear, nonexact)
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amcqueen101
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Prove y' = |y| , y(0)=0 has unique solution, though states of thm's of existence, uniqueness not true
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195
Dr.Peterson
Dr.Peterson
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Solve y'' - y' = t - e^{-t} using variation of parameters
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55
Eigendorf
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Falling: If resultant force downwards follows the equation F = mg - kv^2, acceleration is a = g - (k/m)v^2
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UKEng20
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Solve differential equation explicitly: dP/dt = 0.2P (1 - P/1000) - 48, using P_0 = 350
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67
Dr.Peterson
Dr.Peterson
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Tricky Riccati DE w/ exponential terms: dE/dt = cB_t + bE_t + a(E_t)^2, s.t. B_t = g(1-e^{ht})/(1-ke^{ht})
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pmms12585
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