Solve an equation for a unknown value

[waqar]

s=1
r=2
i=3
pbar=0.9
mu=0.5

pbar=(1-mu)/(r*g*mu+1-mu)-(r*g*mu*(1-mu))/(((r*g*mu*(1+i)+1-mu))*(r*g*mu*(1+i)+1-2*mu))
find
g

[fcas80]

Hi. This looks like a non-linear equation for g. How would you solve it outside of R? Probably something like Newton-Raphson. There is a Newton-Raphson function (probably many packages have one) in package pracma/ See https://www.rdocumentation.org/packages/pracma/versions/1.9.9/topics/newtonRaphson