Ticket #11143: trac-11143-ref.2.patch

sage/functions/exp_integral.py

@@ -466 +466 @@
         return mpmath_utils_call(mpmath.li, z, parent=parent)
 
     def _derivative_(self, z, diff_param=None):
-        """
+        r"""
         The derivative of `\operatorname{li}(z) is `1/log(z)`.
 
         EXAMPLES::
@@ -657 +657 @@
         return mpmath_utils_call(mpmath.si, z, parent=parent)
 
     def _derivative_(self, z, diff_param=None):
-        """
-        The derivative of `\operatorname{Si}(z)` is `\sin(z)/z` if `z` is not zero. The derivative
-        at `z = 0` is `1` (but this exception is not currently implimented).
+        r"""
+        The derivative of `\operatorname{Si}(z)` is `\sin(z)/z` if `z`
+        is not zero. The derivative at `z = 0` is `1` (but this
+        exception is not currently implemented).
 
         EXAMPLES::
 
@@ -800 +801 @@
         return mpmath_utils_call(mpmath.ci, z, parent=parent)
 
     def _derivative_(self, z, diff_param=None):
-        """
+        r"""
         The derivative of `\operatorname{Ci}(z)` is `\cos(z)/z` if `z` is not zero.
 
         EXAMPLES::
@@ -953 +954 @@
         return mpmath_utils_call(mpmath.shi, z, parent=parent)
 
     def _derivative_(self, z, diff_param=None):
-        """
+        r"""
         The derivative of `\operatorname{Shi}(z)` is `\sinh(z)/z`.
 
         EXAMPLES::
@@ -1272 +1273 @@
 
                       E_1(x) = \int_{x}^{\infty} e^{-t}/t dt
 
-
-
     INPUT:
 
-
     -  ``x`` - a positive real number
 
     -  ``n`` - (default: 0) a nonnegative integer; if
@@ -1287 +1285 @@
 
     OUTPUT:
 
-
     -  ``float`` - if n is 0 (the default) or
 
     -  ``list`` - list of floats if n 0