Let be a continuous function that is concave up on the entire interval
MATHEMATICS · Subjective · AP · Calculus AB · Integration and Accumulation of Change · Integration and Accumulation of Change
Problem
Let f be a continuous function that is concave up on the entire interval [2,6]. When a midpoint Riemann sum with equal subintervals is used to approximate ∫26f(x)dx, is the approximation an overestimate or an underestimate of the exact integral value? State your answer ("overestimate" or "underestimate").