Volume Between Curves Calculator
This calculator computes the volume of a solid formed by rotating the region between two curves around the x-axis.
Here's a comprehensive table summarizing all you need to know about calculating the volume between curves:
Aspect | Details |
---|---|
Definition | The volume of the solid formed by rotating the region between two curves around an axis |
General Formula | V = π ∫(a to b) [f(x)² - g(x)²] dx (for rotation around x-axis) |
Key Steps | 1. Identify the two functions f(x) and g(x) |
2. Determine the interval [a, b] | |
3. Choose the axis of rotation | |
4. Apply the appropriate formula | |
5. Integrate and evaluate | |
Rotation Around X-axis | V = π ∫(a to b) [f(x)² - g(x)²] dx |
Rotation Around Y-axis | V = 2π ∫(c to d) x[f(y) - g(y)] dy |
Washer Method | Used when rotating around x-axis or y-axis |
Shell Method | Used when rotating around y-axis or x-axis (perpendicular to the axis in the function) |
Intersection Points | Solve f(x) = g(x) to find limits of integration |
Common Mistakes | 1. Using incorrect limits of integration |
2. Forgetting to square functions for x-axis rotation | |
3. Not identifying the correct upper and lower functions | |
Tips | 1. Sketch the region to visualize the problem |
2. Check units and final answer for reasonableness | |
3. Practice with various curve combinations |
This table provides a concise overview of the key concepts, formulas, and considerations for calculating the volume between curves