$M\left(a,b,x\right)$ denotes the Kummer confluent hypergeometric function $M$; (also known as the generalized hypergeometric function ${}_{1}F_{1}\left(a;b;x\right)$) see DLMF (13.2.2). Computations are currently restricted to real $x$ and either

$a=b$, excluding $b$ being a non-positive integer, or

integer $a$ and non-integer $b$, or

integer $a,b$ with $b>0$ and $b\ge a$.

Evaluate $M\left(a,b,x\right)$
as a
Tabulation or Comparison?

Get function arguments from form
or data file?

Specify the data file to compare tofor arguments: Note: The lines in the data file must contain values for $a$, $b$, $x$ and $M\left(a,b,x\right)$ in that order, separated by commas or spaces.

Specify grid for function parameters and arguments: