Question: Slope field with intial condition

> restart; with(DEtools); with(plots); > eq := diff(y(x), x) = x^2+y^2; > S := solve(eq, diff(y(x), x)); > P1 := DEplot(diff(y(x), x) = S, y(x), x = -1 .. 1, y = -1 .. 1, colour = red); > display(P1); That is what I have so far, but now I need just the slope field corresponding to the initial condition y(0)=1. Any help you can give would be very much appreciated.
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