Let f and g continuous functions in R that satisfy at the same time all the following equalities : 11 • (f(x) + g(x)) dx = -5 • f(x) dx = 19 11 • -11 g(x) dx = 22 . 11 [ f(x) dx 6 What's the value of Oa) -3 O b) 16 Oc) - 22 O d) 19 ?

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