I am attempting to make a plot of the solution an ODE. I want to plot the solution using PolarPlot
, x
is the polar angle in this case. I cannot get Mathematica to make a plot, and I'm not sure where I'm going wrong. I tried going about it this way:
sol = DSolve[r'[x] == Sqrt[-r[x]^2 - 2*A*r[x]^5 + 3*A^[2/3]*r[x]^4], r[0] == 0, r[x], x]
PolarPlot[sol, {x, 0, 8*Pi}]
but nothing is produced on the graph. Is this wrong?
A^[2/3]
is not a valid expression. The expression must be put in curly brackets if you provide a boundary condition.DSolve
provides the result as aRule
you cannot plot a rule straight up. Look at the documentation for DSolve and study the examples. $\endgroup$