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petter


Last seen: 9 months ago |  Active since 2011

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what I should do-----second order variable coefficients ODE??
Hi, matlab person,I have some problems about second order variable coefficients ODE. Thank you very much for any suggestion o...

12 years ago | 2 answers | 0

2

answers

Question


second order variable coefficients ODE -so confused !!!
Hi matlab person: Nowdays, I am solving a second order variable coefficients ODE {x^2 y''+x y'-sin(y)cos(y)+x sin(y)^2-x^...

12 years ago | 1 answer | 0

1

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Question


The problem about dir function
hi every one: when I use dir function to get the same type files of a file, (the file name is 10.png, 20.png, 50.png, 100.p...

12 years ago | 2 answers | 0

2

answers

Question


on contour in limited z range
hello, matlab pepole while I use "surf" to create x,y,z 3D surface,where z=z(x,y), then I want to get the "contour" of the su...

12 years ago | 0 answers | 0

0

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Question


with cycle, changing the content of text
hi, matlab people Is someone encountering the following case, or can anyone solve the following problem? any suggestion I...

12 years ago | 2 answers | 0

2

answers

Answered
Conversion to double from sym is not possible
In the wide and broad world, never contact with each other, you gave me so useful help. thank you for your timely answer and...

12 years ago | 0

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Question


Conversion to double from sym is not possible
Hi every body, I am a beginner of matlab this is my code syms x; A = [3*x , 0; 0.3*f , 0; 3 , 0; 1 , 0]; for a=1:2 ...

12 years ago | 2 answers | 0

2

answers