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- In[136]:= Table[
- With[{z = InverseFunction[f][x]},
- BellY[Table[{Pochhammer[n, j]/
- Derivative[1][f][
- z], -Derivative[j + 1][f][
- z]/((j + 1) Derivative[1][f][z]^(j + 1))}, {j, n - 1}]] -
- D[z, {x, n}] // Simplify], {n, 2, 6}]
- Out[136]= {0, 0, 0, 0, 0}
- In[137]:=
- With[{p = 4, z = InverseFunction[f][x]},
- Sum[Derivative[m][g][z] BellY[p, m,
- Table[If[k == 1, 1/Derivative[1][f][z],
- BellY[Table[{Pochhammer[k, j]/
- Derivative[1][f][
- z], -Derivative[j + 1][f][
- z]/((j + 1) Derivative[1][f][z]^(j + 1))}, {j,
- k - 1}]]], {k, p}]], {m, 1, p}] - (D[
- g[z], {x, p}])] // Expand
- Out[137]= 0
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