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1.41/(z^4-1)+1
exp(z)-exp(-z)-2z+0.1+1.419i
exp(z)-exp(-z)-2z+0.2+1.4i
z^2-0.47+0.54i
z=z^2-u^2-0.4+3.5i u=2zu-0.4+3.5i
z^2+ixy-0.35+0.5i
z^2+ixy+0.3+0.06i
z^4+z^2/2-0.7+0.77i
z^4/2+z^2+0.78i z^4/2+z^2+0.79i