LaTeX.org

I have following command
with intention with making the whole sentence bold but it does not make alpha and R as bold so how can I do that?

\documentclass[a4paper,12pt,twoside]{book}
\usepackage{amsmath,amssymb,amsfonts,geometry} % Typical maths resource packages
\usepackage{xcolor} % For creating coloured text and background
\usepackage{hyperref} % For creating hyperlinks in cross references
\usepackage{graphicx}
\usepackage{pstricks ...

how do you generate a list of notations like attachment file?
help please

I have this one very long equation which can not be displayed on one page as it can be seen from the attachment. I want to know how I can display it properly.
Thanks!


\documentclass[a4paper,12pt,twoside]{book}
\usepackage{amsmath,amssymb,amsfonts,geometry} % Typical maths resource packages ...

\begin{align}
\mathbf{u}=(u(x,y,t),v(x,y,t))
\end{align}
then general form of Euler equation can be defined as
\begin{align*}
\rho\bigg(\frac{\partial}{\partial t}+\mathbf{u} \cdot \nabla\bigg)\mathbf{u}+\nabla p=0, \\
\nabla\cdot\mathbf{u}=0.
\end{align*}


Hi
I want to align all my equations ...

Suppose we have a time-dependent or time-independent velocity vector field in $\mathbb{R}^{2}$
\begin{align}
\mathbf{u}=(u(x,y,t),v(x,y,t))
\end{align}
then general form of Euler equation can be defined as
\begin{align*}
\rho\bigg(\frac{\partial}{\partial t}+\mathbf{u} \cdot \nabla\bigg)\mathbf{u ...

Thanks heaps!

\documentclass[a4paper,10pt,fleqn,twoside]{book}
\usepackage{amsmath,amssymb,amsfonts,a4wide} % Typical maths resource packages
\usepackage{graphics} % Packages to allow inclusion of graphics
\usepackage{color} % For creating coloured text and background
\usepackage{hyperref} % For creating ...

\documentclass[a4paper,10pt,fleqn,twoside]{book}
\usepackage{amsmath,amssymb,amsfonts,a4wide} % Typical maths resource packages
\usepackage{graphics} % Packages to allow inclusion of graphics
\usepackage{color} % For creating coloured text and background
\usepackage{hyperref} % For creating ...