DLMF:

Figure 8.3.6 (See in context.)

Figure 8.3.6: $\mathop{\gamma^{{*}}\/}\nolimits\!\left(a,x\right)$ (= $x^{{-a}}\mathop{P\/}\nolimits\!\left(a,x\right)$ ), $-4\leq x\leq 4$ , $-5\leq a\leq 4$ .

Annotations:

Symbols:: $\mathop{P\/}\nolimits\!\left(a,z\right)$ : normalized incomplete gamma function, $\mathop{\gamma^{{*}}\/}\nolimits\!\left(a,z\right)$ : incomplete gamma function, : real variable and : parameter
Permalink:: http://dlmf.nist.gov/8.3.F6.mag
Encodings:: Magnified png, VRML, X3D, pdf