I’m trying to plot a phase portrait for the equation:
(d^2/dt^2)y + b * (dy/dt)^2 = A, A > 0, b < 0
The first think I’m doing is just changing
dy/dt = p[y], so the equation is:
p'[y] + b * (p[y])^2 = A, A > 0, b < 0
When i’m using StreamPlot and substitution for A and b, i see just blank graph. How is it better to implement it?
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