- #1

laurabon

- 16

- 0

- Homework Statement
- let f : [a, b] → R ,

α ≥ 0 and Eα = {x ∈ [a, b] : exists f'(x) e |f'(x)|≤ α}

show that m (f(Eα)) ≤ α m(Eα)

- Relevant Equations
- .

my question is how can I approch the problem ? And what is explicitly the set f(Eα)? {f(x) ∈ [a, b] such that what ??}