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Which of the following differential equations is exact? A B (2x - 7y) dx + (7x - 2y) dy = 0 (xe” — 2ysinx)dy + (re? – y2cosx) dx=0 (2sinx + 2xcosy) dx + (x²siny + 2cosy) dy = 0 (2x³y-3xy2) dy + (y³ + 3x²y²) dx=0

Which of the following differential equations is exact? A B (2x - 7y) dx + (7x - 2y) dy = 0 (xe” — 2ysinx)dy + (re? – y2cosx) dx=0 (2sinx + 2xcosy) dx + (x²siny + 2cosy) dy = 0 (2x³y-3xy2) dy + (y³ + 3x²y²) dx=0

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Which of the following differential equations is exact? A B (2x - 7y) dx + (7x − 2y) dy = 0 (xe” — 2ysinx)dy + (re? – y2cosx) dx=0 (2sinx + 2xcosy) dx + (x²siny + 2cosy) dy = 0 (2x³y-3xy2) dy + (y³ + 3x²y2) dx=0
Transcribed Image Text:Which of the following differential equations is exact? A B (2x - 7y) dx + (7x − 2y) dy = 0 (xe” — 2ysinx)dy + (re? – y2cosx) dx=0 (2sinx + 2xcosy) dx + (x²siny + 2cosy) dy = 0 (2x³y-3xy2) dy + (y³ + 3x²y2) dx=0
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