Show That the Function Has Exactly One Zero in the Given

question 30

Essay

Show that the function has exactly one zero in the given interval.
- $$f ( x ) = x ^ { 3 } + \frac { 7 } { x ^ { 2 } } + 2 , ( - \infty , 0 )$$

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Definitions:

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Austrian neurologist and the founder of psychoanalysis, a method for treating psychopathology through dialogue between a patient and a psychoanalyst.

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