7/y+7-5/y-3

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Solution for 7/y+7-5/y-3 equation: 


D( y )

y = 0

y = 0

y = 0

y in (-oo:0) U (0:+oo)

7/y-(5/y)-3+7 = 0

7/y-5*y^-1-3+7 = 0

2*y^-1 = -4 // : 2

y^-1 = -2

-1 < 0

1/(y^1) = -2 // * y^1

1 = -2*y^1 // : -2

-1/2 = y^1

y = -1/2

y = -1/2

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