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

question 124

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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