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| I need to solve the following system: ---------- $2 \frac{d A_p} { dx} = -i B A_s$ ---------- $\frac{x}{2} \frac{d A_s}{dx} + 3/4 A_s = -i B^* A_p$ ---------- $\frac{d^2 B}{ d^2 x} = -A_p A_s^*$ ---------- with... |