4/p=p/9

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Solution for 4/p=p/9 equation: 


D( p )

p = 0

p = 0

p = 0

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

4/p = p/9 // - p/9

4/p-(p/9) = 0

4*p^-1-1/9*p^1 = 0

(4*p^0-1/9*p^2)/(p^1) = 0 // * p^2

p^1*(4*p^0-1/9*p^2) = 0

p^1

(-1/9)*p^2+4 = 0

(-1/9)*p^2+4 = 0

DELTA = 0^2-(4*4*(-1/9))

DELTA = 16/9

DELTA > 0

p = ((16/9)^(1/2)+0)/(2*(-1/9)) or p = (0-(16/9)^(1/2))/(2*(-1/9))

p = -6 or p = 6

p in { -6, 6} 

p in { -6, 6 }

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