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1. |
Find the particular solution of the differential equation ( frac{dy}{dx}= frac{9y ,log x}{5x ,log y} ). |
A. | (log u2061y)<sup>2</sup>+(log u2061x)<sup>2</sup>=0 |
B. | (log u2061y)<sup>2</sup>-(log u2061x)<sup>2</sup>=0 |
C. | log u2061y-log u2061x=0 |
D. | 2 log u2061x+log u2061y=0 |
Answer» C. log u2061y-log u2061x=0 | |