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# I want to solve this equation and plot it but lot of errors are coming kindly help

조회 수: 3 (최근 30일)
마감: MATLAB Answer Bot 2021년 8월 20일
x=0:3;
y=diff((x^3)*(ln(3*x+1))^2)
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John D'Errico 2017년 5월 4일
편집: John D'Errico 2017년 5월 4일
I see three distinct problems (arguably a 4th too), one of which was done 3 separate times. That many problems in essentially one short line of code suggests you need to read the getting started tutorials. While you might think that this comment is non-constructive since it does not directly answer your question, in fact, it is. While somebody will probably come along and show you what to change in that one line, there are also problems of concept, that suggest you don't understand MATLAB. Showing you how to get one line of code right will not help you in the long run, whereas reading the basic documentation will serve you greatly.
could you correct my question now please

### 답변 (1개)

Santhana Raj 2017년 5월 5일
Matrices multiplication can be element by element or vector multiplication. For element by element, which I assume you want, the operator is
.*
Secondly, ln is not a function in matlab. Use log.
Thirdly, I think you want x to be from 0 to 3. whatever you have written will create 4 elements. [0 1 2 3]. I am assuming that you want to do [0:0.1:3]
Fourthly, are you sure you want the difference and not the derivative.

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