<jupyter_start><jupyter_text>Rearranging the system matrices from  (<NAME>, 1999)[1] <NAME>., & <NAME>. (1999). Analytical characterization of the unique properties of planetary gear free vibration. Journal of Vibration and Acoustics, Transactions of the ASME, 121(3), 316–321. http://doi.org/10.1115/1.2893982 \[2] <NAME>., & <NAME>. (2012). Vibration Properties of High-Speed Planetary Gears With Gyroscopic Effects. Journal of Vibration and Acoustics, 134(6). http://doi.org/10.1115/1.4006646<jupyter_code>from sympy import *
init_printing()

def symb(x,y):
    return symbols('{0}_{1}'.format(x,y), type = float)<jupyter_output><empty_output>
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