answers correctly solved 2025/2026
ri - correct answer ✔rate of inflow
ro - correct answer ✔rate of outflow
ci - correct answer ✔concentration of inflow
co - correct answer ✔concentration of outflow
x(t) - correct answer ✔amount of solute
V(t) - correct answer ✔amount of solution
Equations for a mixture problem - correct answer ✔V(t) = V_0 + (ri-ro)*∆t
dx/dt = ri*ci - ro*co
co = x/V
Homogeneous equation - how to recognize - correct answer ✔Each term has the same total degree
Homogeneous equation - substitution - correct answer ✔That is the substitution
Differentiate y = V * x