(1/4)a-4a^-1=0

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Solution for (1/4)a-4a^-1=0 equation: 


D( a )

a = 0

a = 0

a = 0

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

(1/4)*a-(4*a^-1) = 0

(1/4)*a-4*a^-1 = 0

1/4*a^1-4*a^-1 = 0

(1/4*a^2-4*a^0)/(a^1) = 0 // * a^2

a^1*(1/4*a^2-4*a^0) = 0

a^1

(1/4)*a^2-4 = 0

(1/4)*a^2-4 = 0

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

DELTA = 4

DELTA > 0

a = (4^(1/2)+0)/(2*(1/4)) or a = (0-4^(1/2))/(2*(1/4))

a = 4 or a = -4

a in { -4, 4} 

a in { -4, 4 }

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