Question: =+ (a) Show that, if f, is a Borel function and f2 is a Lebesgue function, then the composition f, f2 is a Lebesgue function.

=+

(a) Show that, if

f, is a Borel function and f2 is a Lebesgue function, then the composition

f, f2 is a Lebesgue function.

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