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R[itex]\ddot{R}[/itex] + 3/2([itex]\dot{R}[/itex]^2 = (1/ρ) (p[itex]_{g}[/itex] - P[itex]_{0}[/itex] -P(t) - 4η ([itex]\dot{R}[/itex]/R) - (2γ/R))

I'm trying to graph this for comparison of maxima and minima (of R) with another graph. If everything except R (and time derivatives of R) and P(t) are constants, how can I do this? (in Excel or an online program, for example; there is no need for actual solving of the problem if it can be graphed without doing so.)