\(\Rightarrow B=-1.-1^3.....-1^{2013}\left(-1^{2x}=1\right).\)
\(=-1^{1008}\)
= 1
\(B=\left(-1\right)\left(-1\right)^2\left(-1\right)^3\left(-1\right)^4...\left(-1\right)^{2014}\)
\(\Rightarrow B=\left(-1\right)^1\left(-1\right)^2\left(-1\right)^3\left(-1\right)^4...\left(-1\right)^{2014}\)
\(\Rightarrow B=\left(-1\right)^{1+2+3+4+...+2014}\)
\(\Rightarrow B=\left(-1\right)^{2029105}\)
\(\Rightarrow B=-1\)