Separate variables to get dy = -6x3dx
So, ∫dy = -∫6x3dx
y = -(3/2)x4 + C
Since y(0) = -4, we have -4 = 0 + C. So, C = -4
Therefore, y = -(3/2)x4 - 4
Marlena B.
asked 11/26/17
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