InverseErfc[s] gives the inverse complementary error function obtained as the solution for z in s = erfc(z).
InverseGammaRegularized[a, s] gives the inverse of the regularized incomplete gamma function.
InverseHaversine[z] gives the inverse haversine function hav -1 (z).
InverseJacobiDC[v, m] gives the inverse Jacobi elliptic function dc -1 (v \[VerticalSeparator] m).
InverseJacobiNC[v, m] gives the inverse Jacobi elliptic function nc -1 (v \[VerticalSeparator] m).
InverseJacobiNS[v, m] gives the inverse Jacobi elliptic function ns -1 (v \[VerticalSeparator] m).
InverseWeierstrassP[p, {g_2, g_3}] gives a value of u for which the Weierstrass function \[WeierstrassP] (u; g_2, g_3) is equal to p.
JacobiSymbol[n, m] gives the Jacobi symbol (n/m).
KelvinBei[z] gives the Kelvin function bei(z).KelvinBei[n, z] gives the Kelvin function bei_n (z).
KelvinBer[z] gives the Kelvin function ber(z).KelvinBer[n, z] gives the Kelvin function ber_n (z).