Decide if the given equation is a solution of the given differential equation.xy' - 3y = x2, y = 8x3 - x2
A. No
B. Yes
Answer: B
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Evaluate by using polar coordinates.
A. 
B. 
C. 
D. 
Answer as requested.In studying the relationship between abortion and breast cancer, researchers have identified a hormone that they believe explains how having an abortion can lead to breast cancer. This explanation is an example of which of the guidelines for establishing causality?
A. An experiment to establish causality between abortion and breast cancer. B. A physical model demonstrating how abortion can cause breast cancer C. Evidence that larger amounts of the suspected cause produce larger amounts of the effect. D. Verification that breast cancer rates differ among groups that differ only in the presence or absence of the suspected cause (abortion).
Using Green's Theorem, find the outward flux of F across the closed curve C.F = (x - y)i + (x + y)j; C is the triangle with vertices at (0, 0), (6, 0), and (0, 8)
A. 384 B. 0 C. 96 D. 48
Find all numbers that must be excluded from the domain of the rational expression.
A. x ? -4 B. x ? 0 C. x ? -6 D. x ? 4