mark matter

F = Y1f1f2/r^2 Y1= 3.62*10^-111 m^3 kg F= Y2fm/r^2 Y2=4.91*10^-61 m^3 s^-1 These equations can explain why we can detect dark matter's gravitational effect but not dark matter itself. Please check the following link for the source. https://vixra.org/abs/2003.0603