Merge pull request #1 from francescoalemanno/patch-1

typo

README.md

@@ -48,7 +48,7 @@ of `h` (by factors of `1/contract`).
 In general, the starting `h` should be large enough that `f(x0+h)`
 can be computed accurately and efficiently (e.g. without
 severe cancellation errors), but small enough that `f` does not
-oscillate much between `x0` and `h`.  i.e. `h` should be a typical
+oscillate much between `x0` and `x0+h`.  i.e. `h` should be a typical
 scale over which the function `f` varies significantly.
 
 Technically, Richardson extrapolation assumes that `f(x0+h)` can

src/Richardson.jl

@@ -59,7 +59,7 @@ slow convergence from `extrapolate`, but you can pass a different
 value of `power` (e.g. `power=0.5`) if your `f` has some different
 (Puiseux) power-series expansion.   Conversely, if `f` is
 an *even* function around `x0`, i.e. `f(x0+h) == f(x0-h)`,
-so that its Taylor series containsonly *even* powers of `h`,
+so that its Taylor series contains only *even* powers of `h`,
 you can accelerate convergence by passing `power=2`.
 """
 function extrapolate(f, h_::Number; contract::Real=0.125, x0::Number=zero(h_), power::Number=1,