Which of the following equations is an exact DE? A (x²+1) dx - xy dy = 0 (B) x dy + (3x-2y) dx = 0 Cx²y dy-y dx = 0 (D) 2xy dx +(2+x²) dy = 0

Intermediate Algebra
10th Edition
ISBN:9781285195728
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter8: Conic Sections
Section8.2: More Parabolas And Some Circles
Problem 63.2PS: By expanding (xh)2+(yk)2=r2, we obtain x22hx+h22ky+k2r2=0. When we compare this result to the form...
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Which of the following equations is an exact DE?
A (x² + 1) dx - xy dy = 0
(B) x dy+ (3x-2y) dx = 0
Ⓒx²y dy-y dx = 0
(D) 2xy dx + (2 + x²) dy = 0
Transcribed Image Text:Which of the following equations is an exact DE? A (x² + 1) dx - xy dy = 0 (B) x dy+ (3x-2y) dx = 0 Ⓒx²y dy-y dx = 0 (D) 2xy dx + (2 + x²) dy = 0
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