Hello! I got a trouble to get the answer of following exponential function with summation. I expect that the answer should be "Heaviside" forms. However, the maple software does not go further. restart; assume(i::posint,n::posint,s::complex); eq1:=sum((-1)^i*exp(-s*T[i])/s,i = 1..n); inttrans[invlaplace](eq1,s,t) assuming T[i]>0,T[i+1]>T[i]; I am a novice for maple. Is there any procedure routine? Please tell me about it. Thanks. Y-G Sung sungyg@chosun.ac.kr

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