$$(\frac{1}{2\sqrt{2}})^{2}+(\frac{1}{\sqrt{2}})^{2}+(\frac{1}{2\sqrt{2}})^{2}$$
$\frac{3}{4}=0.75$
$$\left(\frac{\sqrt{2}}{2\left(\sqrt{2}\right)^{2}}\right)^{2}+\left(\frac{1}{\sqrt{2}}\right)^{2}+\left(\frac{1}{2\sqrt{2}}\right)^{2}$$
$$\left(\frac{\sqrt{2}}{2\times 2}\right)^{2}+\left(\frac{1}{\sqrt{2}}\right)^{2}+\left(\frac{1}{2\sqrt{2}}\right)^{2}$$
$$\left(\frac{\sqrt{2}}{4}\right)^{2}+\left(\frac{1}{\sqrt{2}}\right)^{2}+\left(\frac{1}{2\sqrt{2}}\right)^{2}$$
$$\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\left(\frac{1}{\sqrt{2}}\right)^{2}+\left(\frac{1}{2\sqrt{2}}\right)^{2}$$
$$\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\left(\frac{\sqrt{2}}{\left(\sqrt{2}\right)^{2}}\right)^{2}+\left(\frac{1}{2\sqrt{2}}\right)^{2}$$
$$\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\left(\frac{\sqrt{2}}{2}\right)^{2}+\left(\frac{1}{2\sqrt{2}}\right)^{2}$$
$$\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}+\left(\frac{1}{2\sqrt{2}}\right)^{2}$$
$$\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}+\left(\frac{\sqrt{2}}{2\left(\sqrt{2}\right)^{2}}\right)^{2}$$
$$\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}+\left(\frac{\sqrt{2}}{2\times 2}\right)^{2}$$
$$\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}+\left(\frac{\sqrt{2}}{4}\right)^{2}$$
$$\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}+\frac{\left(\sqrt{2}\right)^{2}}{4^{2}}$$
$$2\times \frac{\left(\sqrt{2}\right)^{2}}{4^{2}}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}$$
$$2\times \frac{2}{4^{2}}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}$$
$$2\times \frac{2}{16}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}$$
$$2\times \frac{1}{8}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}$$
$$\frac{1}{4}+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}$$
$$\frac{1}{4}+\frac{2}{2^{2}}$$
$$\frac{1}{4}+\frac{2}{4}$$
$$\frac{1}{4}+\frac{1}{2}$$
$$\frac{3}{4}$$
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$\frac{3}{2 ^ {2}} = 0.75$
