Can someone confirm my differentiation code is correct?
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Ruslan Khoguev
le 8 Sep 2019
Réponse apportée : Devineni Aslesha
le 11 Sep 2019
I need to differentiate P(a,u,EA1,EA2) with respect to u. I get the code to run, but im not sure the answer is correct since it gives me a long answer.
syms L10(a) L1(a,u) epsilon1(a,u) L20(a) N1(a,u,EA1) N2(a,u,EA2) P(a,u,EA1,EA2)
L10(a) = 2*a;
L20(a) = sqrt(5)*a;
L1(a,u) = sqrt((2*a)^2+u^2);
L2(a,u) = sqrt((2*a)^2+(a-u)^2);
epsilon1(a,u) = (L1(a,u)-L10(a))/L10(a);
epsilon2(a,u) = (L2(a,u)-L20(a))/L20(a);
N1(a,u,EA1) = EA1*epsilon1(a,u);
N2(a,u,EA2) = EA2*epsilon2(a,u);
P(a,u,EA1,EA2) = (u/(L1(a,u)))*(N1(a,u,EA1))-((a*u)/(L2(a,u)))*(N2(a,u,EA2));
df = diff(P(a,u,EA1,EA2),u)
3 commentaires
Walter Roberson
le 9 Sep 2019
Yes, that is correct syntax for differentiating the expression returned by P(a,u,EA1,EA2) with respect to u.
Réponse acceptée
Devineni Aslesha
le 11 Sep 2019
The code written to differentiate P (a, u, EA1, EA2) with respect to u is correct. It will give correct result. The reason for the answer to be long might be because of the display of all the terms in the differentiated output.
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