Determine whether the following statements are true or false. Give a brief explanation. (a) If f(x) is concave up on [a, b], the left-endpoint approximation LN is an underestimate of the value of ff(x) dx. (b) Let f(x) be continuous. Then f(x) has more than one antiderivative. (c) By the FTC part 1, 2 L², ²-de = Intel ₁ = ln |2| − In | − 1| = ln(2).

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