Did you try looking up inherent(ly) in a dictionary?
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Nonlinear control system problems arise when the structure or fixed elements of the system are inherently nonlinear, and/or nonlinear compensation is introduced into the system for the purpose of improving its behavior.
The word 'inherently' is closest in meaning to ...... .
I really don't know which option can be correct here. Because I think "inherently' is synonymous with: genetically, intrinsically.
esĚsenĚtial(-snshl)adj.1. Constituting or being part of the essence of something; inherent.
essentially - definition of essentially by the Free Online Dictionary, Thesaurus and Encyclopedia.
I found out my answer. Thanks :)