Hi all,
is it possible to increase the index of a symbolic variable.
I tried this.
var('b x')
var('i n', integer=True)
print(var('x:5'))
print(summation(b_i*x(n-i),(i, 0, 4)))
The output should look like this:
b4*x(n - 4) + b3*x(n - 3) + b2*x(n - 2) + b1x(n - 1) + b0x(n)
Error message is: name b_i not defined
Thanx
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