72/y=9

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Solution for 72/y=9 equation: 


D( y )

y = 0

y = 0

y = 0

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

72/y = 9 // - 9

72/y-9 = 0

72*y^-1 = 9 // : 72

y^-1 = 1/8

-1 < 0

1/(y^1) = 1/8 // * y^1

1 = 1/8*y^1 // : 1/8

8 = y^1

y = 8

y = 8

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