how to rewrite an equation in terms of another equation?
17 views (last 30 days)
Show older comments
Omidreza Ghafarinejad
on 26 Apr 2015
Commented: Star Strider
on 26 Apr 2015
Hi. I have an equation for example like this:
sigma = 4*q*y^3/(b*h^3)
and I introduce that:
I = b*h^3/12
now I want to know how can I rewrite "sigma" in terms of "I"?
3 Comments
pfb
on 26 Apr 2015
Ok, now that you have explained it, I understand. Perhaps I'm a bit slow.
Anyway, duplicating the question in the "tags" field is not very helpful.
Referring to symbolic calculations would have been more helpful.
Accepted Answer
Star Strider
on 26 Apr 2015
This works:
syms q y b h I
sigma = 4*q*y^3/(b*h^3);
Eq1 = I == b*h^3/12;
b = solve(Eq1,b);
sigma = subs(sigma)
produces:
sigma =
(q*y^3)/(3*I)
2 Comments
More Answers (0)
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!