If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
y = (1/2)*x^3-2 // - (1/2)*x^3-2
y-((1/2)*x^3)+2 = 0
(-1/2)*x^3+y+2 = 0
-1/2*x^3 = -(y+2) // : -1/2
x^3 = 2*(y+2)
x^3 = 2*(y+2) // ^ 1/3
x = 2^(1/3)*(y+2)^(1/3)
x = 2^(1/3)*(y+2)^(1/3)
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