differetial equation

2010-01-03 1:22 am
solve
y-(3/2)y'=6
please show the steps clearly

回答 (1)

2010-01-03 1:48 am
✔ 最佳答案
y - (3/2)(dy/dx) = 6
2y - 3(dy/dx) = 12
2y - 12 = 3(dy/dx)
dx = 3dy/(2y - 12)
S dx = 3 S dy/(2y - 12)
x = 3ln(2y - 12)/2 + C
2x = 3ln(2y - 12) + ln c = lnK(2y - 12)^3
so K(2y - 12)^3 = e^(2x).
or A(y - 6)^3 = e^(2x).
C, K and A are constants.

2010-01-02 18:02:10 補充:
Note: ln c = 2C which is also a constant. K = c. 8K = A.


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