Using solve and saving answers to use again

Question

Joshua 2014-3-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/119950-using-solve-and-saving-answers-to-use-again

编辑： Star Strider 2014-3-3

Hi again, Im trying to solve a quartic equation, and save the answers in a way that i can use the variables again. So far ive got :

clear
g=9.81;
h=10;
u=1.5;
syms a b c d
a=u./sqrt(g.*h)
h=10;
d=0.5;
c=0.5;
b=solve(((a^(2)*b^4)/2)+2*c*a^(2)*b^(3)-(2-2*d+a^(2))*b^(2)-(4*c+2*c*a^(2)-4)*b+((a^(2)/2)+4*c-2*c^(2)*d-2),b,'MaxDegree',3)

Which yeilds me the response:

a =

0.1514

b =

1555540396380393239417370831804
993753283660616260599428304438
12926899451597696747749296398951
-11.278576317814632552018658351608

Great - however i want to save these answers as something i can use after for more calculations, im only interested in answers where b>1. This is the equation i want to use these variables in next:

e=(2(b+c)-((b-1)^3/(d*b(b-c))))/(4+(b^2-1)/(c*b))

Thanks