[Bug]printRecursiveSeries()的迭代计算问题
>> printRecursiveSeries((4*x_n+(6*x_n^3+6*x_n^2+4*x_n+10)/(5*x_n^4-9*x_n^2-4*x_n-1))/5,x_n,(0.618),3,\n,\linenumber)
0.618
-0.02921664
-:.:99:9978/5-0.02337331
------------------------
>> printRecursiveSeries((4*(x_n)+(6*(x_n)^3+6*(x_n)^2+4*(x_n)+10)/(5*(x_n)^4-9*(x_n)^2-4*(x_n)-1))/5,x_n,0.618,3,\n,\linenumber)
0.618
-0.02921664
-:.:99:9978/5-0.02337331
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>> printRecursiveSeries(a_n,a_n,1,5,\t)
1 1 1 1 1
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>> printRecursiveSeries(a_n,a_n+1,1,5,\t)
1 a_n a_n a_n a_n
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