FourierSinCoefficient[expr, t, n] gives the n\[Null]^th coefficient in the Fourier sine series expansion of expr.FourierSinCoefficient[expr, {t_1, t_2, ...}, {n_1, n_2, ...}] ...
HurwitzLerchPhi[z, s, a] gives the Hurwitz\[Dash]Lerch transcendent \[CapitalPhi](z, s, a).
IdentityMatrix[n] gives the n*n identity matrix.
ImageResize[image, w] gives a resized version of image that is w pixels wide.ImageResize[image, {s}] gives a resized version of image with a maximum pixel width or height ...
Inpaint
(Built-in Mathematica Symbol) Inpaint[image, region] retouches parts of image that correspond to nonzero elements in region.
InverseBetaRegularized[s, a, b] gives the inverse of the regularized incomplete beta function.
InverseErfc[s] gives the inverse complementary error function obtained as the solution for z in s = erfc(z).
KelvinBei[z] gives the Kelvin function bei(z).KelvinBei[n, z] gives the Kelvin function bei_n (z).
LeafCount[expr] gives the total number of indivisible subexpressions in expr.
LeveneTest[data] tests whether the variance of data is 1. LeveneTest[{data_1, data_2}] tests whether the variances of data_1 and data_2 are equal.LeveneTest[dspec, ...