what calculator can calculate trigonometric, exponential and logarithmic functions?

Any Casio or other brand sold as a "scientific" calculator can do that.

By the way, inverse common logs are just 10 to the x, and inverse natural logs are just e to the x.

Exponential and logarithmic purposes have lots of purposes to the real international. some that i can call off the desirable of my head are: calculating returns on financial investments - exponential purposes are used lots in calculating pastime returns installation information curves to foretell device variables interior the destiny - such because of fact the inhabitants interior the destiny calculating 0.5 lives of chemical factors - distinctive factors could be made via decaying radioactive aspects over a undeniable volume of time. and the needs bypass on and on and on .......................

All of the TI-83 plus and higher level graphing calculators have such capabilities.

ANY scientific calculator can do all these functions.