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Let f:[0,4pi]->[0,pi] be defined by f...

Let `f:[0,4pi]->[0,pi]` be defined by `f(x)=cos^-1(cos x).` The number of points `x in[0,4pi]` 4satisfying the equation `f(x)=(10-x)/10` is

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To solve the problem, we need to find the number of points \( x \) in the interval \( [0, 4\pi] \) that satisfy the equation \[ f(x) = \frac{10 - x}{10} \] where \( f(x) = \cos^{-1}(\cos x) \). ...
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