Pyramid 1141
Preview $$U_{1141}(x, y) = \frac{1}{\left(- \frac{x \left(- 2 y - \sqrt{1 - 4 y} + 1\right)^{2}}{4 y^{4}} + 1\right)^{2}}$$
Pyramid 1142
Preview $$U_{1142}(x, y) = \frac{1}{\left(- \frac{x \left(- 2 y - \sqrt{1 - 4 y} + 1\right)^{3}}{8 y^{6}} + 1\right)^{2}}$$
Pyramid 1143
Preview $$U_{1143}(x, y) = \frac{1}{\left(- x \left(y + 1\right) + 1\right)^{3}}$$
Pyramid 1144
Preview $$U_{1144}(x, y) = \frac{1}{\left(- x \left(y + 1\right)^{2} + 1\right)^{3}}$$
Pyramid 1145
Preview $$U_{1145}(x, y) = \frac{1}{\left(- x \left(y + 1\right)^{3} + 1\right)^{3}}$$
Pyramid 1146
Preview $$U_{1146}(x, y) = \frac{1}{\left(- \frac{x}{1 - y} + 1\right)^{3}}$$
Pyramid 1147
Preview $$U_{1147}(x, y) = \frac{1}{\left(- \frac{x}{\left(1 - y\right)^{2}} + 1\right)^{3}}$$
Pyramid 1148
Preview $$U_{1148}(x, y) = \frac{1}{\left(- \frac{x}{\left(1 - y\right)^{3}} + 1\right)^{3}}$$
Pyramid 1149
Preview $$U_{1149}(x, y) = \frac{1}{\left(- \frac{x \left(1 - \sqrt{1 - 4 y}\right)}{2 y} + 1\right)^{3}}$$
Pyramid 1150
Preview $$U_{1150}(x, y) = \frac{1}{\left(- \frac{x \left(1 - \sqrt{1 - 4 y}\right)^{2}}{4 y^{2}} + 1\right)^{3}}$$
Pyramid 1151
Preview $$U_{1151}(x, y) = \frac{1}{\left(- \frac{x \left(1 - \sqrt{1 - 4 y}\right)^{3}}{8 y^{3}} + 1\right)^{3}}$$
Pyramid 1152
Preview $$U_{1152}(x, y) = \frac{2 x}{1 - y} + \sqrt{\frac{4 x^{2}}{\left(1 - y\right)^{2}} + 1}$$
Pyramid 1153
Preview $$U_{1153}(x, y) = \frac{1}{\left(- \frac{x \left(- 2 y - \sqrt{1 - 4 y} + 1\right)^{2}}{4 y^{4}} + 1\right)^{3}}$$
Pyramid 1154
Preview $$U_{1154}(x, y) = \frac{1}{\left(- \frac{x \left(- 2 y - \sqrt{1 - 4 y} + 1\right)^{3}}{8 y^{6}} + 1\right)^{3}}$$
Pyramid 1155
Preview $$U_{1155}(x, y) = \frac{\left(1 - y\right)^{3} \left(1 - \sqrt{- \frac{4 x}{\left(1 - y\right)^{3}} + 1}\right)}{2 x}$$
Pyramid 1156
Preview $$U_{1156}(x, y) = \frac{y^{3} \left(4 - 4 \sqrt{- \frac{x \left(1 - \sqrt{1 - 4 y}\right)^{3}}{2 y^{3}} + 1}\right)}{x \left(1 - \sqrt{1 - 4 y}\right)^{3}}$$
Pyramid 1157
Preview $$U_{1157}(x, y) = \frac{y^{4} \left(2 - 2 \sqrt{- \frac{x \left(- 2 y - \sqrt{1 - 4 y} + 1\right)^{2}}{y^{4}} + 1}\right)}{x \left(- 2 y - \sqrt{1 - 4 y} + 1\right)^{2}}$$
Pyramid 1158
Preview $$U_{1158}(x, y) = \frac{y^{6} \left(4 - 4 \sqrt{- \frac{x \left(- 2 y - \sqrt{1 - 4 y} + 1\right)^{3}}{2 y^{6}} + 1}\right)}{x \left(- 2 y - \sqrt{1 - 4 y} + 1\right)^{3}}$$
Pyramid 1159
Preview $$U_{1159}(x, y) = \left(y + 1\right)^{2} \sqrt{4 x \left(y + 1\right)^{2} + 1}$$
Pyramid 1160
Preview $$U_{1160}(x, y) = \frac{\left(1 - \sqrt{- 4 x \left(y + 1\right)^{2} + 1}\right)^{2}}{4 x^{2} \left(y + 1\right)^{4}}$$
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