3/q=5/q+4

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Solution for 3/q=5/q+4 equation: 


D( q )

q = 0

q = 0

q = 0

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

3/q = 5/q+4 // - 5/q+4

3/q-(5/q)-4 = 0

3/q-5*q^-1-4 = 0

-2*q^-1 = 4 // : -2

q^-1 = -2

-1 < 0

1/(q^1) = -2 // * q^1

1 = -2*q^1 // : -2

-1/2 = q^1

q = -1/2

q = -1/2

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