Question

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Answer 1

f(4) = (-4/3) - 1/2

f(4) = (-8-3)/6

f(4) = -11/6

f(-1) = 1/3 - 1/2

f(-1) = (2-3)/6

f(-1) = -1/6

M.a. = (-11/6 - 1/6) : 2

M.a. = (-12/6) : 2

M.a. = (-2) : 2

M.a. = (-1)