EDB β€” 1D4

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E14

[1D4]Let \(f : (a, b) β†’ ℝ\) be differentiable and such that, if \(f (t) = 0\), then \(f' (t) = 0\). Show that the function \(g(t) = |f (t)|\) is differentiable. [ [1D5]]

Solution 1

[1D6]

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