import graph;
size(500,0);
real fsd(real m_fuel) {
    // 4A drive
    real boost = 1.0;
    real f_max = 3.0;
    real m_opt = 525.0;
    real m_ship = 347.0;
    real l = 12.0;
    real p = 2.30;
    return ((boost*m_opt*(1000.0*min(f_max,m_fuel)/l)^(1/p)))/(m_ship+m_fuel);
}

draw(graph(fsd,-100,100,n=500,Hermite),red);

xaxis("$m_{fuel}$");
yaxis("$range (Ly)$",0);