How to find unknown in the equation
1 view (last 30 days)
Show older comments
Moza Mohamed
on 24 Mar 2021
Commented: Star Strider
on 24 Mar 2021
How to find w in equation 2. Below is my code i dont know what seems to be the problem.
a=4.3*10.^-3
r=1.68*10.^-8
t=[0:100:1083]
p=r.*[1+a.*(t-20)]
c=0.385
figure
syms w
sol = solve(r.*(1+(a./c).*w)==p) % equation 2
vpa( sol )
0 Comments
Accepted Answer
Star Strider
on 24 Mar 2021
Since ‘p’ is a vector, probably the easiest way to do this is to use a loop:
for k = 1:numel(p)
sol(k) = vpasolve(r.*(1+(a./c).*w)==p(k)) % equation 2
end
Thagt gives 11 values for ‘‘w’.
2 Comments
Star Strider
on 24 Mar 2021
Since ‘w’ is a funciton of ‘p’ and ‘sol’ is ‘w’, try this:
for k = 1:numel(p)
sol(k) = vpasolve(r.*(1+(a./c).*w)==p(k)); % equation 2
end
figure
plot(double(p), double(sol))
grid
xlabel('p')
ylabel('w')
More Answers (0)
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!