2/a-4

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Solution for 2/a-4 equation: 


D( a )

a = 0

a = 0

a = 0

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

2/a-4 = 0

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

a^-1 = 2

-1 < 0

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

1 = 2*a^1 // : 2

1/2 = a^1

a = 1/2

a = 1/2

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