Find the Point(s) of Inflection of the Graph Of $f ( x ) = \cos ^ { - 1 } 7 x$

question 50

Multiple Choice

Find the point(s) of inflection of the graph of $f ( x ) = \cos ^ { - 1 } 7 x$ .

• A) \(( 1,0 ) , \left( 0 , \frac { \pi } { 2 } \right)\), and \(\left( 0 , \frac { \pi } { 7 } \right)\)
• B) \(( 1,0 )\)
• C) \(\left( 0 , \frac { \pi } { 7 } \right)\)
• D) \(\left( 0 , \frac { \pi } { 2 } \right)\)

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