🔣یکی از شگفتی‌های ریاضی این است که مجموع اعداد فرد متوالی همیشه به یک مربع کامل ختم می‌شود! این یعنی وقتی اعداد فرد را یکی یکی جمع می‌کنید، نتیجه همیشه یک مربع خواهد بود.
🟣به عنوان مثال: 1=1² 1+3=4=2² 1+3+5=9=3² 1+3+5+7=16=4² ... فرمول کلی این رابطه 1+3+...+(2n-1)=n²
❗️این الگو یک راز جذاب از دنیای ریاضی است که نشان میدهد چگونه یک جمع ساده می‌تواند به نتایج شگفت انگیز منتهی شود.
🔣یکی از شگفتی‌های ریاضی این است که مجموع اعداد فرد متوالی همیشه به یک مربع کامل ختم می‌شود! این یعنی وقتی اعداد فرد را یکی یکی جمع می‌کنید، نتیجه همیشه یک مربع خواهد بود.
🟣به عنوان مثال: 1=1² 1+3=4=2² 1+3+5=9=3² 1+3+5+7=16=4² ... فرمول کلی این رابطه 1+3+...+(2n-1)=n²
❗️این الگو یک راز جذاب از دنیای ریاضی است که نشان میدهد چگونه یک جمع ساده می‌تواند به نتایج شگفت انگیز منتهی شود.
Stocks dropped on Friday afternoon, as gains made earlier in the day on hopes for diplomatic progress between Russia and Ukraine turned to losses. Technology stocks were hit particularly hard by higher bond yields. Apparently upbeat developments in Russia's discussions with Ukraine helped at least temporarily send investors back into risk assets. Russian President Vladimir Putin said during a meeting with his Belarusian counterpart Alexander Lukashenko that there were "certain positive developments" occurring in the talks with Ukraine, according to a transcript of their meeting. Putin added that discussions were happening "almost on a daily basis." In February 2014, the Ukrainian people ousted pro-Russian president Viktor Yanukovych, prompting Russia to invade and annex the Crimean peninsula. By the start of April, Pavel Durov had given his notice, with TechCrunch saying at the time that the CEO had resisted pressure to suppress pages criticizing the Russian government. Official government accounts have also spread fake fact checks. An official Twitter account for the Russia diplomatic mission in Geneva shared a fake debunking video claiming without evidence that "Western and Ukrainian media are creating thousands of fake news on Russia every day." The video, which has amassed almost 30,000 views, offered a "how-to" spot misinformation. "Someone posing as a Ukrainian citizen just joins the chat and starts spreading misinformation, or gathers data, like the location of shelters," Tsekhanovska said, noting how false messages have urged Ukrainians to turn off their phones at a specific time of night, citing cybersafety.
from sg
