Riemann Sums, Summation Notation, Definite Integral Notation

AP Calculus AB· difficulty 2/5

abf(x)dx\displaystyle\int_a^b f(x)\,dx represents

  • A

    Average of f(a)f(a) and f(b)f(b)

  • B

    Total area between the graph and xx-axis

  • C

    Length of the curve

  • D

    Net <strong>signed</strong> area (above axis positive, below axis negative)

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Explanation

Definite integral: signed area.

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