Progress Sums: 1,2,3,4,5..., -1,-2,-3,-4,-5... It can be found using the formula: Sn=(n²a₁+n)/2. Progress Sum: 1,3,6,10,15..., -1,-3,-6,-10,-15... It can be found using the formula: Sn= ((n+a₁)³-(n+a₁))/6. Progress Sum: 1,4,9,16,25..., -1,-4,-9,-16,-25... It can be found using the formula: Sn= a₁(n+a₁)(n²a₁+0.5n)/3. (Where n - is the number of summable terms, a₁ - is the first term of the progression).
РЕКОНСТРУКЦИЯ АРХИТЕКТУРНОГО ТИПА РАННЕГО МУСУЛЬМАНСКОГО ДВОРЦА
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Service. Head of the Main Directorate for International Military Cooperation
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ФЕНОМЕН ИСЛАМСКОГО ОБРАЗОВАНИЯ
Collision of gas molecules is the source of energy. We assemble a simple galvanic cell (analogous to the well-known battery). We place two electrodes with a potential difference in a NaCl solution. With a fixed load of the external circuit, we discharge the cell. Without breaking the external circuit, we cover the galvanic cell with a glass flask. In the mixture of atmospheric air located under the flask, we increase the percentage of carbon dioxide several times by introducing carbon dioxide under the flask. We record the restoration of the cell charge.
ЛИВОНИЯ В СРЕДНИЕ ВЕКА. ВЛАСТЬ ОРДЕНА И ЕПИСКОПОВ
Perm Mayor Yuri TRUTNEV:"THE CONCEPTS OF "ARMY" AND "HOMELAND" ARE INSEPARABLE FOR ME"
"ИСТОРИЯ ГРАЖДАНСКОЙ ВОЙНЫ В УЗБЕКИСТАНЕ". Т. I