Question: Consider this function f(x) =x - sin(x) . 1. Find f (7) . Is f (x) differentiable at *=7 ? Why or why not. If


Consider this function f(x) =x - sin(x) . 1. Find f (7) . Is f (x) differentiable at *=7 ? Why or why not. If differentiable, find the value of (f-!)'(1) . 2. Find f-1(27) . Is f-(x) differentiable at x =27 ? Why or why not. If differentiable, find the value of (f-!)'(21)
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