S3 f(x) dx = −3 and 2₂9(x) dx = -2, what is the value of f(x)g(y) dA, where D is the rectangle: 3 ≤ x ≤9, -2≤ y ≤ 2? HINT. Use Fubini's theorem. You will see that the integral will get factored. you do not see that, go to the textbook of Stewart. That will help. NOTE. An ordinary integral depends only on the function being integrated (the "integrand") and the interval of integration. It does NOT depend on of the variable of integration. This is similar to summation: ₁ and Σk are the same - both mean 1+2+3+4. Similarly, ₂9(x) dx [(y)dy are the same - each one equals the area under the graph of g over the interval [-2, 9] (assuming that the function is nonnegative).

Calculus: Early Transcendentals
8th Edition
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Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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If f3² f(x) dx = −3 and 5²₂g(x) dx = −2, what is the value of f(x)g(y) dA,
where D is the rectangle: 3 ≤ x ≤9, -2 ≤ y ≤ 2?
HINT. Use Fubini's theorem. You will see that the integral will get factored.
If you do not see that, go to the textbook of Stewart. That will help.
NOTE. An ordinary integral depends only on the function being integrated (the "integrand") and the interval of integration. It does NOT depend on the notation
of the variable of integration. This is similar to summation: 1 and 1k are the same - both mean 1+2+3+4. Similarly, ₂g(x)dx and
Sg(y)dy are the same - each one equals the area under the graph of g over the interval [-2, 9] (assuming that the function g is nonnegative).
Transcribed Image Text:If f3² f(x) dx = −3 and 5²₂g(x) dx = −2, what is the value of f(x)g(y) dA, where D is the rectangle: 3 ≤ x ≤9, -2 ≤ y ≤ 2? HINT. Use Fubini's theorem. You will see that the integral will get factored. If you do not see that, go to the textbook of Stewart. That will help. NOTE. An ordinary integral depends only on the function being integrated (the "integrand") and the interval of integration. It does NOT depend on the notation of the variable of integration. This is similar to summation: 1 and 1k are the same - both mean 1+2+3+4. Similarly, ₂g(x)dx and Sg(y)dy are the same - each one equals the area under the graph of g over the interval [-2, 9] (assuming that the function g is nonnegative).
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