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# Xizeng Feng

Last seen: 7 mesi fa Attivo dal 2021

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Domanda

what is wrong with my calculation?
It hints the expresion was wrong when I solve the equations as follow: >>syms rs xs rp xp >> [xs,xp]=solve(rs*rp^2/(rs^2+(xs+x...

8 mesi fa | 1 risposta | 0

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Domanda

Why the results are different when use different letters?
I solve same equations in different ketters and got fifferent results as follow: But rs=a, xs=b, rp=c and xp=d. the equations...

9 mesi fa | 3 risposte | 0

### 3

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Domanda

How to draw a ball by plot3?
I am learning the MATLAB,

10 mesi fa | 3 risposte | 0

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Inviato

interesting waveform
The effect of echo of FM signal is interesting

Domanda

How to vectorize the function?
I run the following codes and had the result of fplot. But comes also some warning as in the bottom, Can anyone tell me how to...

circa un anno fa | 2 risposte | 0

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Domanda

In the Symbolic toolbox,how to get the results like in the old version
In the symbolic toolbox, the results in newer version are different from the old version. For example: >> syms x >> int(1/(x-...

circa un anno fa | 2 risposte | 0

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Domanda

circa un anno fa | 0 risposte | 0

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Domanda

How to multiply 2 arrays by elements
I have 2 arrays of complex numbers and want to get the result of multiply element by element. What can I do? thanks a lot!

circa un anno fa | 1 risposta | 0

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Domanda

how to vectorize a function?
I ran the following and got some reply: >> y=@(x)x^2; >> fplot(y) 警告: 函数处理数组输入时行为异常。要改善性能，请将您的函数正确向量化，以返回大小和形状与输入参数相同的输出。 >...

oltre un anno fa | 0 risposte | 0

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Domanda

What is the prblem?
I run the following sentens and got the warnings, someone can explain them? >> y=@(x)x^2; >> fplot(y) 警告: 函数处理数组输入时行为异常。要改善性能...

oltre un anno fa | 0 risposte | 0

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