/ ____________ \ | / ____ | | / \/ 57 2 | And|-oo < x, x < 1 + 3 / 1 + ------ + -------------------| | \/ 9 ____________| | / ____ | | / \/ 57 | | 3*3 / 1 + ------ | \ \/ 9 /
(-oo < x)∧(x < 1 + (1 + sqrt(57)/9)^(1/3) + 2/(3*(1 + sqrt(57)/9)^(1/3)))
____________ 3 ___ 3 / ____ 2/3 \/ 3 *\/ 9 + \/ 57 2*3 (-oo, 1 + --------------------- + -----------------) 3 ____________ 3 / ____ 3*\/ 9 + \/ 57
x in Interval.open(-oo, 2*3^(2/3)/(3*(sqrt(57) + 9)^(1/3)) + 1 + 3^(1/3)*(sqrt(57) + 9)^(1/3)/3)