S=(-1)+(-1)+...+(-1)
Dãy số S có:(2015-1):2+1=1008( số)
=> S=(-1).1008=-1008
S=(-1)+(-1)+...+(-1)
Dãy số S có:(2015-1):2+1=1008( số)
=> S=(-1).1008=-1008
tính tổng : S= \(\left(-3\right)^0+\left(-3\right)^1+\left(-3\right)^2+...+\left(-3\right)^{2015}\)
Tính tổng
S=\(\left(-3\right)^0+\left(-3\right)^1+\left(-3\right)^2+........+\left(-3\right)^{2015}\)
tính tổng
S=\(\left(-3\right)^0+\left(-3\right)^1+\left(-3\right)^2+...+\left(-3\right)^{2015}\)
Tính
S = \(\left(-3\right)^0+\left(-3\right)^1+\left(-3\right)^2+........+\left(-3\right)^{2015}\)
tính tổng \(S=\left(-3\right)^0+\left(-3\right)^1+\left(-3\right)^2+.....+\left(-3\right)^{2015}\)
otinh tong
S=\(\left(-3\right)^0+\left(-3\right)^1+\left(-3\right)^2+...+\left(-3\right)^{2015}\)
Tính : \(\left(-1\right)+\left(-1\right)^2+\left(-1\right)^3+...+\left(-1\right)^{2015}\)
tính
A=\(\left(\frac{1}{3}+\frac{1}{4}+..+\frac{1}{2016}\right)\left(1+\frac{1}{2}+...+\frac{1}{2015}\right)\left(1+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{2016}\right)\left(\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2015}\right)\)
tính B=\(\left(-3\right)^0+\left(-3\right)^1+...+\left(-3\right)^{2015}\)