Volume Calculation Using the Disk Method

The video tutorial explains how to calculate the volume of a solid formed by rotating a region bounded by the function y = e^(3x + 2), x = 0, x = 0.8, and y = 0 about the x-axis. The disk method is used, where the volume is determined by integrating the square of the function with respect to x. The tutorial covers setting up the integral, using technology to find the solution, and performing the integration manually. The final volume is approximately 115.137 cubic units.

What is the main goal of the problem discussed in the video?

• To solve a differential equation

• To determine the length of a curve

• To calculate the volume of a solid

• To find the area of a triangle

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

Which method is used to find the volume of the solid in the video?

• Washer Method

• Cavalieri's Principle

• Disk Method

• Shell Method

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the integral used to calculate the volume in the disk method?

• Integral of f(x) dx

• Integral of f(x)^2 dx

• Integral of f(x) dy

• Integral of f(x)^2 dy

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the role of 'dx' in the disk method integral?

• It represents the volume of the disk

• It represents the radius of the disk

• It represents the height of the disk

• It represents the width of the disk

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What technology is used to find the value of the definite integral?

• Graphing calculator

• Spreadsheet software

• Statistical software

• Programming language

What is the first step in manually calculating the integral?

• Finding the derivative

• Squaring the function

• Simplifying the expression

• Substituting the limits

What substitution is used for integrating e^(6x)?

• u = 6x

• u = 3x

• u = x^2

• u = 2x

What is the antiderivative of 4e^(3x)?

• e^(3x)

• 3/4 e^(3x)

• 4/3 e^(3x)

• 4e^(3x)

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

What is the final volume of the solid as calculated in the video?

• 120.000 cubic units

• 100.500 cubic units

• 115.137 cubic units

• 110.250 cubic units

Tags

CCSS.HSF-IF.C.8B

What is the significance of e^0 in the final calculation?

• It equals negative one

• It equals two

• It equals zero

• It equals one

Tags

CCSS.HSF-IF.C.8B