Definite Integral Notation & Definition

Reading integral notation, the limit definition, and geometric meaning of a definite integral.

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Definite Integral Notation & Definition

27 questions

AP Learning Target(s): LT 3: Riemann Sums, Summation Notation, and Definite Integral Notation

Antiderivative Notation

Which of the following notations is used to represent the general antiderivative of a function `f(x)`?

  1. A.

    $$\int$$f(x) dx

  2. B.

    F(x)

  3. C.

    f''(x)

  4. D.

    f'(x)

Correct answer: B
Definite Integral Notation

Which of the following correctly represents the definite integral of a function f(x) on the interval [a, b]?

  1. A.

    $$\int$$f(x) dx [a, b]

  2. B.

    $$\int$$f(x) dx

  3. C.

    $\displaystyle\int_{a}^{b}$ f(x) dx

  4. D.

    $$\int$$f(x) [a, b] dx

Correct answer: C
Definite Integral Notation

Which of the following symbols is used to represent the definite integral of a function?

  1. A.

    ∇

  2. B.

    $$\int$$

  3. C.

    ∆x

  4. D.

    Σ

Correct answer: B
Definite Integral Notation

Which of the following represents the definite integral of a function `f` from `a` to `b`?

  1. A.

    ∆x[f(x)] from a to b

  2. B.

    $$\int \left(f(x)\right)$$ dx from a to b

  3. C.

    Σ[f(x)] from a to b

  4. D.

    ∑[f(x)dx] from a to b

Correct answer: B
Definite Integral Notation

Which of the following represents the definite integral of a function $f(x)$ from $x=a$ to $x=b$?

  1. A.

    $\displaystyle\int_{a}^{b}$ f(x) dx

  2. B.

    $$\int$$(a, b) f'(x) dx

  3. C.

    $$\int$$(a, b) f(x) dx

  4. D.

    $\displaystyle\int_{a}^{b}$ f'(x) dx

Correct answer: A
Definition of a Definite Integral

Which of the following best defines a definite integral?

  1. A.

    The integral of a function over a specific interval.

  2. B.

    The integral of a function with no specified limits.

  3. C.

    The integral of a function at infinity.

  4. D.

    The integral of a function approaching a limit.

Correct answer: A
Definition Of Integration

In calculus, the process of integration is primarily associated with which of the following applications?

  1. A.

    The process of finding the limit of a sequence

  2. B.

    The process of finding the slope of a tangent line

  3. C.

    The process of finding the derivative of a function

  4. D.

    The process of finding the area under a curve

Correct answer: D
Definition Of Limits Of Integration

The limits of integration for a definite integral define which of the following?

  1. A.

    The maximum and minimum values of the function

  2. B.

    The values at which the function is continuous

  3. C.

    The starting and ending points of the interval

  4. D.

    The critical points of the function

Correct answer: C
Definition of the Definite Integral

A right Riemann sum for a function *g* on the interval [0, π] is formed using *n* subintervals of equal width. What is the limit of this sum as *n* approaches infinity?

  1. A.

    lim(n→∞) Σ(i=1 to n) g(π·i/n)·(π/n)

  2. B.

    $\displaystyle\int_{0}$ᵖ g'(x) dx

  3. C.

    $\displaystyle\int_{0}$ᵖ g(x) dx

  4. D.

    lim(n→∞) max(Δx)·Σ(i=1 to n) g(xi*)

Correct answer: C
Definition Of The Definite Integral

If the function f is continuous on the interval [0, 2] and $\displaystyle\int_{0}^{2}$ f(x)dx = 5, which of the following must be true?

  1. A.

    f(x) must be positive for all x in [0,2]

  2. B.

    lim(n→∞) Σᵢ₌₁ⁿ f(2i/n)(2/n) = 5

  3. C.

    The average value of f on [0,2] is 5

  4. D.

    f(1) = 5/2

Correct answer: B
Definition of the Definite Integral

A function `f` is continuous on the interval `[a, b]`. If the limit of a Riemann sum for `f` on this interval equals 7, which of the following statements must be true?

  1. A.

    f(b) - f(a) = 7

  2. B.

    $\displaystyle\int_{a}^{b}$ f(x) dx = 7

  3. C.

    f(a) + f(b) = 7

  4. D.

    The average value of f(x) on [a,b] is 7

Correct answer: B
Definition of the Definite Integral

Let f be a continuous function on the closed interval [a, b]. Let S_n be a Riemann sum for f on [a, b] using a partition of n subintervals of equal width. Which of the following statements must be true?

  1. A.

    The error |S_n - $$\int$$ₐᵇ f(x)dx| is exactly (b-a)²/2n for all n

  2. B.

    S_n = $$\int$$ₐᵇ f(x)dx for all n ≥ 1

  3. C.

    lim(n→∞) S_n = $$\int$$ₐᵇ f(x)dx only if f is differentiable

  4. D.

    For any ε > 0, there exists N such that for all n > N, |S_n - $$\int$$ₐᵇ f(x)dx| < ε

Correct answer: D
Geometric Interpretation of a Definite Integral

Which of the following is a geometric interpretation of the definite integral of a function f(x) over an interval [a, b]?

  1. A.

    The area between the curve and the x-axis over the interval

  2. B.

    The maximum value of f(x) over the interval

  3. C.

    The average value of f(x) over the interval

  4. D.

    The minimum value of f(x) over the interval

Correct answer: A
Geometric Interpretation Of The Definite Integral

Geometrically, what does the definite integral of a function f(x) from x = a to x = b represent?

  1. A.

    Sum of f(x) over the interval from x = a to x = b.

  2. B.

    Area under the curve of f(x) from x = a to x = b.

  3. C.

    Rate of change of f(x) from x = a to x = b.

  4. D.

    Length of the curve of f(x) from x = a to x = b.

Correct answer: B
Geometric Interpretation of the Definite Integral

Which of the following is the principal geometric interpretation of the definite integral of a function on a closed interval?

  1. A.

    Slope of the tangent line

  2. B.

    Length of the hypotenuse

  3. C.

    Volume of a solid

  4. D.

    Area under the curve

Correct answer: D
Geometric Representation of Accumulation

Which of the following geometric quantities represents the accumulation of change for a constant function over an interval?

  1. A.

    Circumference of a circle

  2. B.

    Volume of a cylinder

  3. C.

    Area of a triangle

  4. D.

    Area of a rectangle

Correct answer: D
Geometric Representation of Accumulation of Change

The accumulation of change for a quadratic function is geometrically represented by which of the following?

  1. A.

    Length of a diagonal

  2. B.

    Volume of a sphere

  3. C.

    Area under a parabola

  4. D.

    Surface area of a cube

Correct answer: C
Interpreting Units of a Definite Integral

The rate of production for a substance in a chemical reaction is given by `r(t) = 2e^(-0.5t)` moles per hour, where `t` is the time in days. For a quantity `Q(t)` defined as `Q(t) = $\displaystyle\int_{0}$ᵗ r(s) ds`, what are the units of `Q(5)`?

  1. A.

    moles × days / hours

  2. B.

    moles × days

  3. C.

    moles

  4. D.

    moles per day

Correct answer: A
Limit Definition of a Definite Integral

Let g be a function that is continuous on the interval [0, 2]. If $$\lim_{n \to \infty} \sum_{k=1}^{n} g\left(\frac{2k}{n}\right) \left(\frac{2}{n}\right) = 5$$, which of the following must be true?

  1. A.

    g(2) - g(0) = 5

  2. B.

    g(1) = 5/2

  3. C.

    $\displaystyle\int_{0}^{2}$ g(x) dx = 5

  4. D.

    $\displaystyle\int_{0}^{2}$ xg(x) dx = 5

Correct answer: C
Limit Definition of the Definite Integral

Let g be a function that is continuous on the interval [0, 5]. Which of the following correctly expresses the definite integral $\displaystyle\int_{0}^{5}$ g(x)dx as the limit of a Riemann sum?

  1. A.

    $\displaystyle\int_{0}^{5}$ g(x)dx = lim(n→∞) Σ(i=1 to n) g(x_i*)·5/n where x_i* ∈ [x_(i-1), x_i]

  2. B.

    $\displaystyle\int_{0}^{5}$ g(x)dx = lim(n→∞) Σ(i=1 to n) g'(x_i*)·5/n where x_i* ∈ [x_(i-1), x_i]

  3. C.

    $\displaystyle\int_{0}^{5}$ g(x)dx = Σ(i=1 to n) g(5i/n)·5/n for any value of n

  4. D.

    $\displaystyle\int_{0}^{5}$ g(x)dx = lim(n→∞) Σ(i=1 to n) g(x_i*)·(5/n)² where x_i* ∈ [x_(i-1), x_i]

Correct answer: A
Net Change as a Definite Integral

The rate of change of a quantity Q with respect to x is given by `dQ/dx = sin(x) - cos(x)` for `0 ≤ x ≤ π`. If `Q(0) = 5`, what is the net change in Q over the interval `[0, π]`?

  1. A.

    2

  2. B.

    0

  3. C.

    2 + π

  4. D.

    π - 2

Correct answer: A
Purpose Of Summation Notation In Calculus

Which of the following best describes a primary use of summation notation in calculus?

  1. A.

    It simplifies the process of finding the derivative of a function.

  2. B.

    It provides a concise representation of a series of terms.

  3. C.

    It defines the definite integral of a function.

  4. D.

    It represents the area under a curve using rectangles.

Correct answer: B
Units of a Definite Integral

The rate at which water flows into a tank is modeled by the function r(t) = 5t² - 3t, where r(t) is measured in gallons per minute and t is measured in hours. What are the units of $\displaystyle\int_{0}^{3}$ r(t) dt?

  1. A.

    gallons × hours / minutes

  2. B.

    gallons per hour

  3. C.

    gallons × hours

  4. D.

    gallons

Correct answer: A
Units of a Definite Integral

If the speed of a car is measured in meters per second, what are the units for the area of the region under the graph of speed versus time?

  1. A.

    Seconds

  2. B.

    Square meters

  3. C.

    Meters

  4. D.

    Meters per second

Correct answer: C
Units of a Definite Integral

If the rate of growth of a population is measured in people per year, what are the units of the integral of this rate with respect to time?

  1. A.

    People

  2. B.

    Square people

  3. C.

    People per year

  4. D.

    Years

Correct answer: A
Units of a Definite Integral

If the rate of change of a quantity is measured in dollars per hour, what are the units of the definite integral of this rate with respect to time?

  1. A.

    Square dollars

  2. B.

    Dollars per hour

  3. C.

    Hours

  4. D.

    Dollars

Correct answer: D
Units of an Integral

If a function represents a rate of change in liters per minute, what are the units of the area under the graph of the function?

  1. A.

    Square liters

  2. B.

    Liters per minute

  3. C.

    Liters

  4. D.

    Minutes

Correct answer: C