theorem Th24: :: NDIFF_6:24

for S, T being RealNormSpace
for Z being Subset of S
for n being Nat
for r being Real
for f being PartFunc of S,T st 1 <= n & f is_differentiable_on n,Z holds
for i being Nat st i <= n holds
diff ((r (#) f),i,Z) = r (#) (diff (f,i,Z))