2.8=90/d

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Solution for 2.8=90/d equation: 


D( d )

d = 0

d = 0

d = 0

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

2.8 = 90/d // - 90/d

2.8-(90/d) = 0

2.8-90*d^-1 = 0

-90*d^-1 = -2.8 // : -90

d^-1 = 0.03111111

-1 < 0

1/(d^1) = 0.03111111 // * d^1

1 = 0.03111111*d^1 // : 0.03111111

32.14285829 = d^1

d = 32.14285829

d = 32.14285829

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