Solve for one variable
3 views (last 30 days)
Show older comments
this is the code for which i want tk solve for p :
syms p
A=0.1199;
At=0.112;
y=1.43;
P1=119;
Error =0.01123;
eqn= ((At^2)/(A^2))==(((y+1)/2)^((y+1)/(y-1)))*(2/(y-1))*(((p/P1)^(2/y))-((p/P1)^(y+1/y)))
solve( eqn,p )
there is only one issue when i run it and that is the eqn shown in command window is completely different from what declared. For example in command type
eqn
The lhs is very different from what i declared for At and A.
0 Comments
Answers (1)
Star Strider
on 4 May 2021
It really is not at all different, except the format.
Examing it —
syms p
A=0.1199;
At=0.112;
y=1.43;
P1=119;
Error =0.01123;
eqn= ((At^2)/(A^2))==(((y+1)/2)^((y+1)/(y-1)))*(2/(y-1))*(((p/P1)^(2/y))-((p/P1)^(y+1/y)))
solve( eqn,p )
Different format, however same value —
LHS_eqn = lhs(eqn)
LHS_eqn_dec = vpa(LHS_eqn)
At_squared = At^2
A_squared = A^2
LHS_frac = At_squared / A_squared
LHS_dec = vpa(LHS_frac)
.
0 Comments
See Also
Categories
Find more on Numbers and Precision in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!