# Bitrix: Site Management Business V20.0.0 [Extra Quality] Full Source ⏩

Bitrix: Site Management Business V20.0.0 Full Source

1. Start Internet Explorer in safe mode by starting the IE program with F8, or by pressing Alt-F8 (Most Windows OS’s), or by using the Programs and Features screen in Control Panel.
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If all else fails, remove the IE Internet security certificate by clicking on the Delete button. You can also manually uninstall the security certificate by unchecking the „Embedded Autocomplete” check box and deselecting the „Embedded Autocomplete” option under Internet Options>Security.Q:

Problem about $\phi eq 1$ in $\int_0^{2\pi}e^{i\theta}\cdot\phi(e^{i\theta})d\theta$

If $\phi(z)$ be an analytic function, then $\phi eq 1$ in $\int_0^{2\pi}e^{i\theta}\cdot\phi(e^{i\theta})d\theta$

I can’t get the value of $\phi(e^{i\theta})$,
By expanding $\phi(e^{i\theta})$,
$$\phi(e^{i\theta})=\phi(e^{i\theta})+O(z-z_0)$$
So in the RHS, we get
$$\phi(e^{i\theta})=O(z-z_0)$$
Then,
$$e^{i\theta}\cdot\phi(e^{i\theta})=O(z-z_0)e^{i\theta}$$
And now
$$\int_0^{2\pi}e^{i\theta}\cdot\phi(e^{i\theta})d\theta=2\pi O(z-z_0)$$
As $|z-z_0|\leq 1$, and $\phi eq1$, we get
$$2\pi=O(z-z_0) eq 0$$
But I think the value must be zero. Where did I do wrong?

A:

If $\phi$ is analytic, then

\phi(e^{i