A 1 +3 + - Dicamon

Question

A 1 +3 +

Answer

co^ -; A=1+3+3^ 2 +3^ 3 +...+3^ 40; A A.3=3(1+3+3^ 2 +3^ 3 +...+5^ 40 ); 3A=3+3^ 2 +3^ 3 +34+...+3^ 41; A-A=(3+3^ 2 -3^ 3 +3^ 4 +...+3^ 11 )-(8A+3+3^ 2 +33+...+3^ (0) ); 2A = 3 ^

Answer

A=1+3+3^ 2 +3^ 3 +3..+3^ 1 3A 3+ 3^ 2 +3^ 3 +3^ 4 +; 3A - A = 3 ^ 11 - 1; 2a = 3 ^ 11 - 1 A 3 ^ 11 2 H_-1; (3 ^ 11 - 1)/2 < 3 ^ 11 2 3 ^ 11; = neg A<B 2 3 ^ 11 - 1 < 6 ^ 11 7

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