28．（2023•玉林三模）已知函数f(x)=e−x−exf(x)=e^{-x}-e^{x}f(x)=e−x−ex，若函数h(x)=f(x−4)+xh(x)=f(x-4)+xh(x)=f(x−4)+x，数列{an}\{a_{n}\}{an}为等差数列，a1+a2+a3+⋯+a11=44a_{1}+a_{2}+a_{3}+\dotsb +a_{11}=44a1+a2+a3+⋯+a11=44，则h(a1)+h(a2)+⋯+h(a11)=h(a_{1})+h(a_{2})+\dotsb +h(a_{11})=h(a1)+h(a2)+⋯+h(a11)=[ 44 ]．