Free counters!

2014년 7월 30일 수요일

Separation of Variables - Arbitrary Constant, 3

Category: Differential Equations

"Published in Newark, California, USA"

Find the particular solution for


in which y = 6 when x = 0.

Solution:

Consider the given equation above  


In order to separate dx and dy from other variables, divide both sides of the equation by (y - 2) cot x as follows





Integrate both sides of the equation, we have  





Take the inverse natural logarithm on both sides of the equation, we have




Substitute the value of x and y in order to get the value of C as follows





Therefore, the particular solution is





 

2014년 7월 29일 화요일

Separation of Variables - Arbitrary Constant, 2

Category: Differential Equations

"Published in Newark, California, USA"

Find the particular solution for


in which y = 2 when x = 5.

Solution:

Consider the given equation above 


Since dx and dy have the same variables, then we can integrate both sides of the equation as follows





Substitute the value of x and y in order to get the value of C as follows






Therefore, the particular solution is





2014년 7월 28일 월요일

Separation of Variables, 22

Category: Differential Equations

"Published in Vacaville, California, USA"

Find the general solution for


Solution:

Consider the given equation above 



In order to separate dx and dy from other variables, divide both sides of the equation by ex•ey as follows





Integrate both sides of the equation, we have   






Therefore, the general solution is