Question

The differential equation (x + 2y) dx + (2x - y) dy = 0 can be solved by the substitution
A) X= x + h, Y = y +k
B) X = xh, Y = yk
C) y = zx
D) y = z/x​

Answer 1

Answer:

d

Step-by-step explanation:

y=z/x

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