Applications Of Calculus
Muhtasari
Integration does far more than reverse differentiation. It lets you calculate the exact area enclosed by a curve, find the region trapped between two graphs, and even compute the volume of a solid formed by spinning a curve around an axis. These ideas turn abstract equations into concrete measurements.
You will also see how calculus drives kinematics: velocity is the derivative of displacement, and acceleration is the derivative of velocity. By integrating or differentiating, you can move freely between displacement, velocity and acceleration, solving motion problems that algebra alone cannot reach.
Malengo
- Understand how displacement, velocity and acceleration are related using calculus
- Determine areas under curves and between curves using integration
- Determine volumes of revolution about the coordinate axes
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- What does the definite integral of y = f(x) between x = a and x = b represent geometrically? A) The gradient of the curve B) The signed area between the curve and the x-axis C) The volume of revolution D) The length of the curve Answer: B
- The region under y = 3x from x = 0 to x = 2 is rotated about the x-axis. What is the volume? A) 12 pi B) 24 pi C) 36 pi D) 6 pi Answer: C
- A particle has displacement s = t^3 - 6t^2 + 9t. When is it instantaneously at rest? A) t = 1 and t = 3 B) t = 0 and t = 3 C) t = 2 only D) t = 3 only Answer: A
- To find the area between two curves y = f(x) and y = g(x), you calculate: A) The integral of f(x) times g(x) B) The integral of f(x) + g(x) C) The integral of f(x) - g(x) where f is above g D) The integral of f(x) divided by g(x) Answer: C
- The volume of revolution about the x-axis formula uses: A) pi times the integral of y dx B) pi times the integral of y squared dx C) The integral of pi y dx D) 2 pi times the integral of y dx Answer: B
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