关于用MATLAB求级数的问题我有如下程序clear\x05syms n x\x05f3=sin(x)/n^2;\x05f4=(-1)^(n-1)x^n/n;\x05I3=symsum(f3,n,1,inf)\x05I4=symsum(f4,n,1,inf)返回结果是I3 = (pi^2sin(x))/6I4 =piecewise([x = -1,-Inf],[abs(x)

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$关于用MATLAB求级数的问题我有如下程序clear\x05syms n x\x05f3=sin(x)/n^2;\x05f4=(-1)^(n-1)*x^n/n;\x05I3=symsum(f3,n,1,inf)\x05I4=symsum(f4,n,1,inf)返回结果是I3 = (pi^2*sin(x))/6I4 =piecewise([x = -1,-Inf],[abs(x)$

关于用MATLAB求级数的问题我有如下程序clear\x05syms n x\x05f3=sin(x)/n^2;\x05f4=(-1)^(n-1)*x^n/n;\x05I3=symsum(f3,n,1,inf)\x05I4=symsum(f4,n,1,inf)返回结果是I3 = (pi^2*sin(x))/6I4 =piecewise([x = -1,-Inf],[abs(x)
关于用MATLAB求级数的问题
我有如下程序
clear
\x05syms n x
\x05f3=sin(x)/n^2;
\x05f4=(-1)^(n-1)*x^n/n;
\x05I3=symsum(f3,n,1,inf)
\x05I4=symsum(f4,n,1,inf)
返回结果是
I3 =
(pi^2*sin(x))/6
I4 =
piecewise([x = -1,-Inf],[abs(x)