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The function f(x)=|cosx| is everywhere c...

The function `f(x)=|cosx|` is everywhere continuous and differentiable everywhere continuous but not differentiable at `(2n+1)pi/2,n in Z` . neither continuous not differentiable at `(2x+1)pi/2,n in Z`

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We have given the function
`f(x)=|cosx|`
As we know the graph of `f(x)=|cos x|`
which is is not differentiable at points `pi/2,(3pi)/2,(-pi)/2`,..... Also it is everywhere continuous
`implies (2n+1)pi/2,n in Z`
Therefore, f is everywhere continuous but not differentiable at `(2n+1)pi/2,n in Z`
...
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