EIR=(1+i)n−1\operatorname{EIR}=(1+i)^{n}-1EIR=(1+i)n−1
EIR=(1+im)m−1\operatorname{EIR}=\left(1+\frac{i}{m}\right)^{m}-1EIR=(1+mi)m−1
EIR=(1+im)mn−1\operatorname{EIR}=\left(1+\frac{\mathrm{i}}{\mathrm{m}}\right)^{\mathrm{mn}}-1EIR=(1+mi)mn−1
EIR=(1+1m)n−1EIR=\left(1+\frac{1}{m}\right)^n-1EIR=(1+m1)n−1
