49/16=b^-2

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Solution for 49/16=b^-2 equation: 


D( b )

b = 0

b = 0

b = 0

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

49/16 = b^-2 // - b^-2

49/16-b^-2 = 0

-1*b^-2 = -49/16 // : -1

b^-2 = 49/16

-2 < 0

1/(b^2) = 49/16 // * b^2

1 = 49/16*b^2 // : 49/16

16/49 = b^2

b^2 = 16/49 // ^ 1/2

abs(b) = 4/7

b = 4/7 or b = -4/7

b in { 4/7, -4/7 }

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