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Unit 6: Integration and Accumulation of Change
6.7 Evaluating Definite Integrals
Understanding properties of definite integrals:
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The Fundamental Theorem of Calculus connects integration and
differentiation
.
True
What does ∫ₐᵇ f(x) dx represent?
Definite integral
A definite integral represents the signed area under the
curve
∫ₐᵇ f(x) dx = F(b) - F(a), where F(x) is the
antiderivative
The linearity property allows us to break down complex
integrals
.
True
What does the Constant Multiple Property allow us to do with definite integrals?
Factor out constants
The Linearity Property breaks down complex integrals, while the Constant Multiple Property simplifies by factoring out
constants
The Constant Multiple Property allows us to factor out constants from the integrand to simplify
definite integrals
.
True
Match the definite integral property with its formula:
Linearity Property ↔️ ∫ₐᵇ [c₁f₁(x) + c₂f₂(x)] dx = c₁∫ₐᵇ f₁(x) dx + c₂∫ₐᵇ f₂(x) dx
Constant Multiple Property ↔️ ∫ₐᵇ c·f(x) dx = c·∫ₐᵇ f(x) dx
In a definite integral, the integrand is denoted by
f(x)
.
True
The Fundamental Theorem of Calculus states that ∫ₐᵇ f(x) dx equals F(b) -
F(a)
The Linearity Property states that ∫ₐᵇ [c₁f₁(x) + c₂f₂(x)] dx equals c₁∫ₐᵇ f₁(x) dx + c₂∫ₐᵇ
f₂(x)
dx.
What does the Addition Property of definite integrals allow us to do?
Divide the interval into subintervals
The Summation Property of definite integrals is
equivalent
to the Addition Property.
True
The addition property simplifies integrals by dividing the interval of integration into subintervals.
True
∫ₐᵇ [c₁f₁(x) + c₂f₂(x)] dx = c₁∫ₐᵇ f₁(x) dx + c₂∫ₐᵇ f₂(x) dx describes the
linearity
The Summation Property states that ∫ₐᵇ f(x) dx = ∫ₐᶜ f(x) dx + ∫ᶜᵇ f(x) dx if a < c < b.
True
The Fundamental Theorem of Calculus states that ∫ₐᵇ f(x) dx = F(b) -
F(a)
The Fundamental Theorem of Calculus relates definite integrals to antiderivatives.
True
What does the linearity property allow in definite integrals?
Separating sums
The linearity property states that
∫ₐᵇ
[c₁f₁(x) + c₂f₂(x)] dx = c₁∫ₐᵇ f₁(x) dx + c₂∫ₐᵇ f₂(x) dx.
True
The linearity property simplifies definite integrals by multiplying each function by its
constant
The linearity property allows the integral of a sum of functions multiplied by constants to be separated into individual
integrals
In the linearity property, c₁ and
c₂
must be constants.
True
∫ₐᵇ [c₁f₁(x) + c₂f₂(x)] dx = c₁∫ₐᵇ f₁(x) dx + c₂∫ₐᵇ f₂(x) dx, where c₁ and c₂ are
constants
The Constant Multiple Property states
∫ₐᵇ
c·f(x) dx = c·∫ₐᵇ f(x) dx.
True
The Constant Multiple Property states that ∫ₐᵇ c·f(x) dx equals c·∫ₐᵇ
f(x)
The Linearity Property allows us to break down complex integrals into
simpler
ones.
What does a definite integral calculate?
Signed area under a curve
Order the steps to evaluate a definite integral using the Fundamental Theorem of Calculus:
1️⃣ Find the antiderivative F(x) of f(x)
2️⃣ Evaluate F(b) - F(a)
Match the component of a definite integral with its description:
∫ ↔️ Integral symbol
a ↔️ Lower limit of integration
b ↔️ Upper limit of integration
f(x) ↔️ Integrand
The Linearity Property allows us to
integrate
each function separately and then add the results.
True
The Addition Property states that ∫ₐᵇ f(x) dx equals ∫ₐᶜ f(x) dx + ∫ᶜᵇ
f(x)
∫₀² x² dx = ∫₀¹ x² dx + ∫₁² x² dx illustrates the
addition
What condition must be satisfied for the Summation Property to apply?
a < c < b
∫ₐᵇ c·f(x) dx = c·∫ₐᵇ f(x) dx illustrates the
constant multiple
The Summation Property allows dividing a complex integral into simpler
subintervals
for easier evaluation.
True
What changes when the order of integration is reversed?
The sign
∫ₐᵇ f(x) dx = -∫ᵇₐ f(x) dx expresses the property of
order of integration
Reversing the order of integration changes the sign of the
definite integral
.
True
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