怎么求等式中的未知数

Question

A = \[Rho]0*(C0 + \[Lambda]0*(W - u))*(W - u);

B = \[Rho]1*(C1 + \[Lambda]1*u + \[Lambda]1*u + \[Lambda]2*u*u)*u;

\[Rho]0 = 8.93;

C0 = 3.94;

\[Lambda]0 = 1.489;

\[Rho]1 = 7.85;

C1 = 3.574;

\[Lambda]1 = 1.92;

\[Lambda]2 = -0.068;

W = 4.91;

A = B;

请问怎么求u，只有一个未知数

Answer 1

A = \[Rho]0*(C0 + \[Lambda]0*(W - u))*(W - u);
B = \[Rho]1*(C1 + \[Lambda]1*u + \[Lambda]1*u + \[Lambda]2*u*u)*u;
\[Rho]0 = 8.93;
C0 = 3.94;
\[Lambda]0 = 1.489;
\[Rho]1 = 7.85;
C1 = 3.574;
\[Lambda]1 = 1.92;
\[Lambda]2 = -0.068;
W = 4.91;
Solve[A == B, u]

Comments

谢谢大佬