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🐶AP Calculus AB/BC Unit 8 Vocabulary

50 essential vocabulary terms and definitions for Unit 8 – Applications of Integration

Study Unit 8
Practice Vocabulary
🐶Unit 8 – Applications of Integration
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🐶Unit 8 – Applications of Integration

8.1 Finding the Average Value of a Function on an Interval

TermDefinition
average value of a functionThe mean value of a function over a specified interval, calculated using the formula (1/(b-a)) ∫[a to b] f(x) dx.
continuousA function that has no breaks, jumps, or holes in its graph over a given interval.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
intervalA connected set of real numbers, typically expressed as a range between two endpoints.

8.10 Volume with Disc Method

TermDefinition
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
disc methodA technique for finding the volume of a solid of revolution by integrating the cross-sectional areas of circular discs perpendicular to the axis of rotation.
solids of revolutionThree-dimensional solids formed by rotating a two-dimensional region around an axis.

8.11 Volume with Washer Method

TermDefinition
cross sectionTwo-dimensional slices of a three-dimensional solid, perpendicular to an axis, used to build up the volume through integration.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
ring shapedCross sections that have the shape of a washer or annulus, with an outer radius and an inner radius, used in volume calculations.
solids of revolutionThree-dimensional solids formed by rotating a two-dimensional region around an axis.
washer methodA technique for finding the volume of a solid of revolution by integrating the areas of ring-shaped (washer-shaped) cross sections perpendicular to the axis of rotation.

8.12 Volume with Washer Method

TermDefinition
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
ring-shaped cross sectionsAnnular (donut-shaped) slices of a solid of revolution formed when the region being rotated has a gap between the axis of rotation and the outer boundary.
solids of revolutionThree-dimensional solids formed by rotating a two-dimensional region around an axis.
washer methodA technique for finding the volume of a solid of revolution by integrating the areas of ring-shaped (washer-shaped) cross sections perpendicular to the axis of rotation.

8.13 The Arc Length of a Smooth, Planar Curve and Distance Traveled

TermDefinition
arc lengthThe distance along a curve between two points, calculated using a definite integral.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
planar curveA curve that exists in a two-dimensional plane and can be defined by a function or parametric equations.

8.2 Connecting Position, Velocity, and Acceleration of Functions Using Integrals

TermDefinition
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
displacementThe net change in position of a particle over a time interval, found by integrating the velocity vector.
rectilinear motionMotion of a particle along a straight line, characterized by changes in position, velocity, and acceleration.
speedThe magnitude of the velocity vector, representing the rate at which a particle is moving without regard to direction.
total distance traveledThe total length of the path traveled by a particle over a time interval, found by integrating the speed.
velocityThe derivative of a position function with respect to time, representing the rate and direction of change of position for a moving particle.

8.3 Using Accumulation Functions and Definite Integrals in Applied Contexts

TermDefinition
accumulationThe process of gathering or building up a quantity over time or over an interval, which can be expressed and calculated using definite integrals.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
net changeThe total change in a quantity over an interval, calculated as the difference between final and initial values, often found using definite integrals.
rate of changeThe measure of how quickly a quantity changes with respect to another variable, often time.

8.4 Finding the Area Between Curves Expressed as Functions of x

TermDefinition
areas in the planeRegions bounded by curves and axes in a coordinate system whose measurements can be determined using integration.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.

8.5 Finding the Area Between Curves Expressed as Functions of y

TermDefinition
areas in the planeRegions bounded by curves and axes in a coordinate system whose measurements can be determined using integration.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.

8.6 Finding the Area Between Curves That Intersect at More Than Two Points

TermDefinition
absolute value of the differenceThe absolute value of the difference between two functions, used to calculate area between curves regardless of which function is on top.
area between curvesThe region enclosed between two or more curves, calculated using definite integrals.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.

8.7 Volumes with Cross Sections

TermDefinition
cross sectionTwo-dimensional slices of a three-dimensional solid, perpendicular to an axis, used to build up the volume through integration.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
rectangular cross sectionsTwo-dimensional rectangular slices of a solid whose areas can be integrated to find the total volume.
square cross sectionsTwo-dimensional square slices of a solid whose areas can be integrated to find the total volume.
volumes of solidsThe measure of three-dimensional space occupied by a solid object, calculated using integration techniques.

8.8 Volumes with Cross Sections

TermDefinition
area formulasMathematical expressions used to calculate the area of two-dimensional shapes, which are applied to cross sections in volume calculations.
cross sectionTwo-dimensional slices of a three-dimensional solid, perpendicular to an axis, used to build up the volume through integration.
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
semicircular cross sectionsThree-dimensional solids whose perpendicular slices are semicircular in shape.
triangular cross sectionsThree-dimensional solids whose perpendicular slices are triangular in shape.
volumes of solidsThe measure of three-dimensional space occupied by a solid object, calculated using integration techniques.

8.9 Volume with Disc Method

TermDefinition
definite integralThe integral of a function over a specific interval [a, b], representing the net signed area between the curve and the x-axis.
disc methodA technique for finding the volume of a solid of revolution by integrating the cross-sectional areas of circular discs perpendicular to the axis of rotation.
solids of revolutionThree-dimensional solids formed by rotating a two-dimensional region around an axis.