Use \dd for derivative d in Y&F-12 28.12 and 30

diff --git a/latex/problems/Young_and_Freedman_12/problem28.12.tex b/latex/problems/Young_and_Freedman_12/problem28.12.tex
index 3d293dad4d8ed55c535b5250767310b1ee328846..85d4744c2d80d309f4a2055c79040856b2cc3c24 100644 (file)
--- a/latex/problems/Young_and_Freedman_12/problem28.12.tex
+++ b/latex/problems/Young_and_Freedman_12/problem28.12.tex
@@ -1,5 +1,5 @@
-\newcommand{\dB}{d\vect{B}}
-\newcommand{\dl}{d\vect{l}}
+\newcommand{\dB}{\dd\vect{B}}
+\newcommand{\dl}{\dd\vect{l}}
 
 \begin{problem*}{28.12} % Biot-Savart law, magnetic field from wires
 Two parallel wires are $5.00\U{cm}$ apart and carry currents in

diff --git a/latex/problems/Young_and_Freedman_12/problem28.30.tex b/latex/problems/Young_and_Freedman_12/problem28.30.tex
index b81ab536805b33714e9a942efecde30c4bc16b78..bccb267a3f68215b7ef48f5852736ddf6f081b0b 100644 (file)
--- a/latex/problems/Young_and_Freedman_12/problem28.30.tex
+++ b/latex/problems/Young_and_Freedman_12/problem28.30.tex
@@ -1,6 +1,6 @@
 % Commented out because these are defined in problem28.12.tex
-%\newcommand{\dB}{d\vect{B}}
-%\newcommand{\dl}{d\vect{l}}
+%\newcommand{\dB}{\dd\vect{B}}
+%\newcommand{\dl}{\dd\vect{l}}
 
 \begin{problem*}{28.30} % Biot-Savart law, magnetic field from wires
 Calculate the magnitude and direction of the magnetic field at point