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2. (24 Points) Let f(x) = 12 - r. Compute fo f(x) dr by. .. (a) . .. first filling in the blanks in the limit definition of the definite integral ... AT = = Di = (express in i and n only) = lim = lim 8 4 = lim 23 12 2 = lim 18 ( 1 + # ) ( 2 + # ) - 2 ( 1 + # ) (b) . .. and then by computing this final limit explicitly, showing all your work: (c) Lastly, compute fo f(x)dx using the Fundamental Theorem of Calculus Part