Solve (3^m)^2m-(81)^frac{1{m}}*(2+7/3m)^n

$$( 3 ^ { m } ) ^ { 2 m } - ( 81 ) ^ { \frac { 1 } { m } } \times ( 2 + \frac { 7 } { 3 m } ) ^ { n }$$

Evaluate

$$-81^{\frac{1}{m}}\left(2+\frac{7}{3m}\right)^{n}+9^{m^{2}}$$

Differentiate w.r.t. m

$$\frac{24\ln(3)m^{4}\times 9^{m^{2}}+7mn\times 3^{\frac{4}{m}}\times \left(\frac{6m+7}{3m}\right)^{n}+28\ln(3)m^{3}\times 9^{m^{2}}+24\ln(3)m\times 3^{\frac{4}{m}}\times \left(\frac{6m+7}{3m}\right)^{n}+28\ln(3)\times 3^{\frac{4}{m}}\times \left(\frac{6m+7}{3m}\right)^{n}}{\left(6m+7\right)m^{2}}$$