(2)-(8/a)/(a)

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Solution for (2)-(8/a)/(a) equation: 


D( a )

a = 0

a = 0

a = 0

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

2-((8/a)/a) = 0

2-8*a^-2 = 0

-8*a^-2 = -2 // : -8

a^-2 = 1/4

-2 < 0

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

1 = 1/4*a^2 // : 1/4

4 = a^2

a^2 = 4 // ^ 1/2

abs(a) = 2

a = 2 or a = -2

a in { 2, -2 }

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