███ █████

███ █████ ███ █████ ████████ ██ █████ █████ ████ █████ (██ ██ ████ ██ ██ ███ █████ ██████ ████). ███ ██ █████ ███ ██ █████ ███████ ██████. █████ ████ ██████ ████ ██ ███ █████ ███████.

████ ██████ ███ █████. ██████ ███████ ████-██████ ███ ████ ███████ ██ ██████ ██████ ${\displaystyle \left[\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]}$, ██ █████ ████, ███████ ██ ████ ████ ${\displaystyle \left[\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\right]}$.

█████████████ (████ ██ ███████ █████ ████████ ██████ ██████), █████ ████ ████ █████ █████ █████ █████ ██ ███ █████ ████ ██████ ██████ ██ ████ ████ █████ █████ ██████ ██. █████ ████ ██████ ██ ███ ████ ███ █████ ██ ████ ██████ ██████ ██ █████ █████ ██████ ██ ████ █████ ██ █████ ██████. ██████ ███ █████ ██ █████ ███ ███████ █████ ██ ████ █████, █████ ███ ██████ █████ ███ █████ ██ ████ █████.

████ ██████ █████ ████ ██ ████ █████ ██████ ████ ████: ${\displaystyle \overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\frac{\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ████:

${\displaystyle \overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ███ ████ ██████ █████ ██ ███ ███ █████.

${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███ ████ ████ █████.

███████ ████ ████ ██ ████ ██ ███████ ██████. █████ █████ ██ ██████ ████ ███████ ██"█ █████ ███████ ██ ███ █████.

██████ ████ █████ ██████ ████ ██ ███ █████. ███ █████ ████ █████ ████ ███ ██ ███ ████ ███. ████ ███ ██ █████ ███████ ████ ██ █████ ██████ ██ ████ █████ ██████ ██████, ██████ ████ ██ ████ ████ █████ ██ ████ ████. ███████ ██████ ██ ████ ████ ██████ ██████, ██████ ██ █████ ████ ██████ █████ █████: ███ █████ ████ ██████ ████ ██ █████ ████ █████ ████, █████. ███ █████ ████ █████ ██████.

████ ██████ █████ ██ ███ ████ █████ ████ ████ ████ █████, ████ ████ ████ █████ ██████ ██ ███ █████ ██████ █████. █████ ████ ████ █████ ██ ███ ████ █████ █████ ████ ████ █████, ████ ████ ████ █████ ██████ ██ ███ █████ ██████ █████.

██ ████ ████ ██████ ████ ███ █████ █████. █████ ████ ███ █████ █████ ████████ █████ ██ █████, ████ ███ ████ ████ █████ ████. █████ ██████ █████ ███ ████ █████ ███ ███ █████, █████ ███ █████. ███ ██████ ████ ███ ███ ████ ██ ████ ███: █████ ██████.

████████ ████-███████ ██ █████ ███ ██████ █████ ██ ████ ███ █████ ██ ████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █████ ████ █████ █████ ████ ███ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$, ████ ████ ████ ██████ ██████ ████, ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$. ██████ ██████ ██ ████ ███ █████ ██ ███ – ███ █████ – █████ ████ ██████ █████ ██ ████ █████ █████ ████ ████ █████ ██ ████ █████ █████ █████ ████ ██ ████, █████ ██████ █████ ██████. ██████ █████, ████ ██████ █████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ █████ █████ ██████ ████ ██████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ███ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}}$, █████ ██████ ████ ██ █████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ████ ██ ███ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}=\frac{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}^{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}}$.

██████ ██ ████ ███ ██████, █████ █████ ██████ ██ ████ (██ ███████ ██ ███████, ███ ███ ███ █████) ██ █████ ████ (██ ███████ ██ ████-████, ███ ███ ███ █████). ███ ████ █████ ██ ███████, ███ ████ █████ ████ ████ ███████ ██████. ██████ █-${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ █████ █████ ██████ █-${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ██ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$. ██ █████ ${\displaystyle \mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}$ ████ ████ ██████ ██████ ███ ██████ ███████ █████ ${\displaystyle \overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$, █████ ██████ ███ ${\displaystyle \widehat{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\frac{\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}-\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{|\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}-\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}|}}$ (██████ ███ ██████ █████ █████ ███ ██████ █████ ████ █████ ██████ ██ █████ █████ ███ ████ █████ ██████ █████).

███ ████ █████ ███ ███ ██████ ████████ ███████ ███████ ${\displaystyle \overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}$ ██████ ███ ${\displaystyle \overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}=\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}\frac{\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}-\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}{|\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}-\overrightarrow{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}{|}^{\mathrm{<span\; word-length="1"\; class="word\; redacted">█</span>}}}}$