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swati shrivastav Grade: 12
        

 


Please solve the following problem,


Verify that y = C*e 4x + e 3x, where c is a constant, is a solution to the differential equation y ' - 4y = -e 3x .

8 years ago

Answers : (1)

anjali SHARMA
8 Points
										

Hi Swati please follow the following:


y ' is given by



y ' = 4C*e 4x + 3e 3x



We now substitute y ' and y into the left side of the equation and simplify



y ' - 4y = 4C*e 4x + 3e 3x - 4 (C*e 4x + e 3x)



= 4C*e 4x + 3e 3x - 4C*e 4x - 4e 3x



= 4C*e 4x - 4C*e 4x + e 3x (3 - 4)



= - e 3x


 


enjoy...

8 years ago
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