How to create a vector with a sequence 1, u, u(u-1), u(u-1)(u-2)....

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PJS KUMAR
PJS KUMAR 2018-9-7
编辑： Walter Roberson 2018-9-7
How to create a vector with a sequence 1, u, u(u-1), u(u-1)(u-2)....
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显示 3更早的评论
Walter Roberson
Walter Roberson 2018-9-7
Does u(u-1) indicate indexing u at index u-1 or does it indicate multiplying the scalar u by (the scalar u minus 1)?

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采纳的回答

Walter Roberson
Walter Roberson 2018-9-7
编辑：Walter Roberson 2018-9-7
syms u
n = 7;
A = [1,cumprod(u - (0:n))];
A =
[ 1, u, u*(u - 1), u*(u - 1)*(u - 2), u*(u - 1)*(u - 2)*(u - 3), u*(u - 1)*(u - 2)*(u - 3)*(u - 4), u*(u - 1)*(u - 2)*(u - 3)*(u - 4)*(u - 5), u*(u - 1)*(u - 2)*(u - 3)*(u - 4)*(u - 5)*(u - 6), u*(u - 1)*(u - 2)*(u - 3)*(u - 4)*(u - 5)*(u - 6)*(u - 7)]

更多回答（1 个）

KALYAN ACHARJYA
KALYAN ACHARJYA 2018-9-7
u=input('Enter the value of u (more than 1): ');
n=input('Enter the numbers of Elements required: ');
a(1)=1;
for i=2:n
a(i)=a(i-1)*(u-i+2);
end
disp(a);
  2 个评论
PJS KUMAR
PJS KUMAR 2018-9-7
Thank you for your response. But I want the vector in terms of 'u' only, without taking value for 'u'.
Rik
Rik 2018-9-7
At some point you'll have to enter a value for u. Or do you plan on using the symbolic toolbox for further analysis?

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