How can I solve an equation containing log ?

c=1692.19

m=260kg

k=91.23

x=100ft

(k*x/m)+v+(c/k)*ln((-kv+c)/c)=0

Find v ?

How to solve this equation in matlab?

Answer 1

[Star Strider]

Use the fsolve function, because it will return complex results, and since the argument to the log function is negative it will return a complex results for ‘v’, at least during the optimisation process.

Also see the documentation section on Anonymous Functions.

Alternatively, use the Symbolic Math Toolbox solve and vpa functions