problem using command solve?!
1 回表示 (過去 30 日間)
古いコメントを表示
Hi
I have a problem using command solve. when I write these commands on the command window, I get 4 answers for m equation.
ka=2;
landa=4;
syms x
y = (ka/landa)*((x/landa)^(ka-1))* (2^(-(x/landa)^ka));
LO = diff(y);
sf=solve(LO,x)
but when i use these same codes in my m.file I have get errors regarding mupad. Moreover I can access to the first answer of sf, not all of them.
Does anybody why this happen?
tnx
sasi
0 件のコメント
回答 (1 件)
Friedrich
2012 年 2 月 14 日
Hi,
when I run your code from the command window I get two solutions:
ka=2;
landa=4;
syms x
y = (ka/landa)*((x/landa)^(ka-1))* (2^(-(x/landa)^ka));
LO = diff(y);
sf=solve(LO,x)
sf =
(2*2^(1/2))/log(2)^(1/2)
-(2*2^(1/2))/log(2)^(1/2)
Running it in a script or functions works fine too. What error do you get? Which version of MATLAB are you using?
参考
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!