Let $f ( x ) = \tan ^ { - 1 } x + \tan ^ { - 1 } \frac { 1 } { x }$

question 198

Essay

Let $f ( x ) = \tan ^ { - 1 } x + \tan ^ { - 1 } \frac { 1 } { x }$ .(a) Show that $f ( x )$ is constant on $( - \infty , 0 ) \text { and } ( 0 , \infty )$ .(b) Determine the value of the constant(s).

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The amount of money owed by a company to its creditors for goods and services purchased on credit.

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An entry recorded on the left side of a T-account, representing an increase in assets or expenses or a decrease in liabilities, equity, or income.

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