Math Help - Equations for the following graphs

Can someone provide an equation for the following graphs please?

It is impossible. You post graphs with no ticks whatsoever.
Even so, the best we could give you is an estimate by means of polynomial approximation for example.

Hello, nazitf!

Can someone provide an equation for the following graph please?

Code:

 
1a

      |
     1*
      |   *
      |      *
      |        *
      |         ♥
      |          *
      |            *
      |               *
      |                   *
      |                           *
    - + - - - - - - - - - - - - - - - - 
      |

A graph of this form could be the function: .


As , the graph approaches the -axis asymptotically.

It has an inflection point at: .

Thanks Soroban - that's what I was after.