9/b-5/4

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Solution for 9/b-5/4 equation: 


D( b )

b = 0

b = 0

b = 0

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

9/b-(5/4) = 0

9/b-5/4 = 0

9*b^-1 = 5/4 // : 9

b^-1 = 5/36

-1 < 0

1/(b^1) = 5/36 // * b^1

1 = 5/36*b^1 // : 5/36

36/5 = b^1

b = 36/5

b = 36/5

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