Why is Matlab not writing out all the terms in an expansion?

2 次查看（过去 30 天）

Lillian 2014-7-12

关闭： MATLAB Answer Bot 2021-8-20

I am trying to expand some polynomials, and I typed: >> y1

Syms s1 s2 s3 s4;
y1 = (s1^2 - 4*s2 + 8*s4^(1/2))*(4*s2 - s1^2 + 8*s4^(1/2));
>> expand(y1)

And Matlab told me that

ans =
- s1^4 + 8*s1^2*s2 - 16*s2^2 + 64*s4.

But I'm pretty sure the answer should have six terms, so what's happening?

Thanks.

Azzi Abdelmalek 2014-7-13

The result is correct, just check it again

Lillian 2014-7-13

Oh, you're right. And I typed in the expressions wrong. Thanks.

此问题已关闭。

此问题已关闭。

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by