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19. (41³y 15² - y) dt + (r² + 3y² - 1) dy = 0 20. dt+ye ye' + dy=0 + 2+ y² 17. (tan x sin x sin y) dx + cos x cos y dy = 0

19. (41³y 15² - y) dt + (r² + 3y² - 1) dy = 0 20. dt+ye ye' + dy=0 + 2+ y² 17. (tan x sin x sin y) dx + cos x cos y dy = 0

Electrical Transformers and Rotating Machines
Electrical Transformers and Rotating Machines
4th Edition
ISBN:9781305494817
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter3: Inductance In Alternating-current Circuits
Section: Chapter Questions
Problem 1P: Fill in all the missing values. Refer to the following formulas. XL = 2fL L=XL2f f=XL2L
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Question

 determine whether the given differential equation 
is exact. If it is exact, solve it. ( please only solve problem 17 and 19 thank you !)

19. (41³y 15² - y) dt + (r² + 3y² - 1) dy = 0 20. dt+ye ye' + dy=0 + 2+ y²
Transcribed Image Text:19. (41³y 15² - y) dt + (r² + 3y² - 1) dy = 0 20. dt+ye ye' + dy=0 + 2+ y²
17. (tan x sin x sin y) dx + cos x cos y dy = 0
Transcribed Image Text:17. (tan x sin x sin y) dx + cos x cos y dy = 0
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