MA 242.003 • Day 33 – February 21, 2013 • Section 12.2: Review Fubini’s Theorem • Section 12.3: Double Integrals over General Regions Compute the volume below z = f(x,y) and above the rectangle R = [a,b] x [c,d] To be able to compute double integrals we need the concept of iterated integrals. Section 12.3: Double Integrals over General Regions Section 12.3: Double Integrals over General Regions “General Region” means a connected 2-dimensional region in a plane bounded by a piecewise smooth curve. Section 12.3: Double Integrals over General Regions “General Region” means a connected 2-dimensional region in a plane bounded by a piecewise smooth curve. Section 12.3: Double Integrals over General Regions Problem: Compute the double integral of f(x,y) over the region D shown in the diagram. Section 12.3: Double Integrals over General Regions Problem: Compute the double integral of f(x,y) over the region D shown in the diagram. Solution: Section 12.3: Double Integrals over General Regions Problem: Compute the double integral of f(x,y) over the region D shown in the diagram. Solution: Section 12.3: Double Integrals over General Regions Problem: Compute the double integral of f(x,y) over the region D shown in the diagram. Section 12.3: Double Integrals over General Regions Problem: Compute the double integral of f(x,y) over the region D shown in the diagram. It turns out that if we can integrate over 2 special types of regions, Section 12.3: Double Integrals over General Regions Problem: Compute the double integral of f(x,y) over the region D shown in the diagram. It turns out that if we can integrate over 2 special types of regions, then properties of integrals implies we can integrate over general regions. Some Examples: Some Examples: Some Examples: Question: How do we evaluate a double integral over a type I region? Question: How do we evaluate a double integral over a type I region? Question: How do we evaluate a double integral over a type I region? Question: How do we evaluate a double integral over a type I region? (Continuation of calculation) Example: (continuation of example) (continuation of example) (continuation of example)