4/81-y^4

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Solution for 4/81-y^4 equation: 


y in (-oo:+oo)

4/81-y^4 = 0

-1*y^4 = -4/81 // : -1

y^4 = 4/81

y^4 = 4/81 // ^ 1/4

abs(y) = (4/81)^(1/4)

y = (4/81)^(1/4) or y = -(4/81)^(1/4)

y in { (4/81)^(1/4), -(4/81)^(1/4) }

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