Question

A=P(1+r/n)^nt solve r

Answer 1

`A=P\left(1+\frac rn\right)^(nt)`

`\frac AP=\left(1+\frac rn\right)^(nt)`

`\ln\frac AP=nt\ln\left(1+\frac rn\right)`

`(\ln\frac AP)/(nt)=\ln\left(1+\frac rn\right)`

`e^(\ln(A/P)/(nt))=1+\frac rn`

`e^(\ln(A/P)/(nt))-1=\frac rn`

`n\left(e^(\ln(A/P)/(nt))-1\right)=r`