Tính B = -1/3 + 1/3^2 - 1/3^3 + ....+ 1/3^50 - 1/3^51
TÍNH B= -1/3+1/3^2-1/3^3+.....+1/3^50-1/3^51
B = -1/3 + 1/3^2 - 1/3^3 +...+ 1/3^50 - 1/3^51
tính B
tính \(B=\dfrac{1}{3}+\dfrac{1}{3^2}-\dfrac{1}{3^3}+...+\dfrac{1}{3^{50}}-\dfrac{1}{3^{51}}\)
Giúp mình giải câu này với Tính B= -1/3+1/3^2-1/3^3+1/3^4-1/3^5+...+1/3^50-1/3^51
-1/3+1/3^2-1/3^3+...+1/3^50-1/3^51
TÍNH :B=-1/3+1/32-1/33+...+1/350-1/351
,E= - 1/3 + 1/(3 ^ 2) - 1/(3 ^ 3) + 1/(3 ^ 4) -...+ 1 3^ 50 - 1 3^ 51
-1/3 +-1/3^2 - 1/3^3 + ..... + 1/3^50 - 1/3^51
