4/y=7

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Solution for 4/y=7 equation: 


D( y )

y = 0

y = 0

y = 0

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

4/y = 7 // - 7

4/y-7 = 0

4*y^-1 = 7 // : 4

y^-1 = 7/4

-1 < 0

1/(y^1) = 7/4 // * y^1

1 = 7/4*y^1 // : 7/4

4/7 = y^1

y = 4/7

y = 4/7

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