f(x, y) = x3 - 2y3 - 3x + 6y
dy xy 1
+ =
dx 1 + x2 x(1 + x2)
y + 4y = x sin 2x
y = x2 - 2 y = -x2
y = ln x OX x " [1, e]
f(x, y) = x3 - 2y3 - 3x + 6y
dy xy 1
+ =
dx 1 + x2 x(1 + x2)
y + 4y = x sin 2x
y = x2 - 2 y = -x2
y = ln x OX x " [1, e]
f(x, y) = x3 - 2y3 - 3x + 6y
dy xy 1
+ =
dx 1 + x2 x(1 + x2)
y + 4y = x sin 2x
y = x2 - 2 y = -x2
y = ln x OX x " [1, e]
f(x, y) = x3 - 2y3 - 3x + 6y
dy xy 1
+ =
dx 1 + x2 x(1 + x2)
y + 4y = x sin 2x
y = x2 - 2 y = -x2
y = ln x OX x " [1, e]