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Solve {1/(4*f) = a, -v_1/(2*f) = b, (v_1)^2/(4*f) + v_2 = c} for {f, v_1, v_2}
Solve {1/(4*f) = a, -v_1/(2*f) = b, (v_1)^2/(4*f) + v_2 = c} for {f, v_1, v_2}
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