MAINT, DOC: Replace 'an' by 'a' in some docstrings.

[ci skip]

Small fixes in the polynomial package.

2 files changed, 2 insertions, 2 deletions

diff --git a/numpy/polynomial/legendre.py b/numpy/polynomial/legendre.py
index e741ce0f8..e9c24594b 100644
--- a/numpy/polynomial/legendre.py
+++ b/numpy/polynomial/legendre.py
@@ -32,7 +32,7 @@ Arithmetic
    legmulx              multiply a Legendre series in ``P_i(x)`` by ``x``.
    legmul               multiply two Legendre series.
    legdiv               divide one Legendre series by another.
-   legpow               raise a Legendre series to an positive integer power.
+   legpow               raise a Legendre series to a positive integer power.
    legval               evaluate a Legendre series at given points.
    legval2d             evaluate a 2D Legendre series at given points.
    legval3d             evaluate a 3D Legendre series at given points.
diff --git a/numpy/polynomial/polynomial.py b/numpy/polynomial/polynomial.py
index 8807904ae..259cd31f5 100644
--- a/numpy/polynomial/polynomial.py
+++ b/numpy/polynomial/polynomial.py
@@ -21,7 +21,7 @@ Arithmetic
 - `polymulx` -- multiply a polynomial in ``P_i(x)`` by ``x``.
 - `polymul` -- multiply two polynomials.
 - `polydiv` -- divide one polynomial by another.
-- `polypow` -- raise a polynomial to an positive integer power.
+- `polypow` -- raise a polynomial to a positive integer power.
 - `polyval` -- evaluate a polynomial at given points.
 - `polyval2d` -- evaluate a 2D polynomial at given points.
 - `polyval3d` -- evaluate a 3D polynomial at given points.