I am LaTeX begginer and when I run this equation, I am getting the error:
! Argument \align* has an extra {.
Here is the equation.
\begin{multline}
\begin{align*}
C_s & = \displaystyle \max_{P(g_M)} \int_0^{\infty}
\bigg[ \left(1-\exp\left(-\frac{g_M}{\overline{g}_W}\right) \right)
\log\left(1+\frac{g_MP(g_M)}{N_M}\right)- \\
\int_0^{g_M} \log\left(1+\frac{g_WP(g_W)}{N_W}\right)
\frac{1}{\overline{g}_W}\exp\left(-\frac{g_W}{\overline{g}_W}\right)
dg_W \bigg]
\frac{1}{\overline{g}_W}\exp\left(-\frac{g_M}{\overline{g}_M}\right) dg_M \\
& = \max_{P(g_M)} \int_0^{\infty}
\bigg[\log \left(1+\frac{g_MP(g_M)}{N_M}\right) -
\exp\left(\frac{1}{\overline{g}_WP(g_M)}\right)
\bigg(Ei\left(\frac{1}{\overline{g}_WP(g_M)}\right)- \\
Ei\left(\frac{g_M}{\overline{g}_W}+
\frac{1}{\overline{g}_WP(g_M)}\right)
\bigg)
\bigg]
\frac{1}{\overline{g}_M}\exp\left(-\frac{g_M}{\overline{g}_M}\right) dg_M
\end{align*}
\end{multline}
Can someone please help? Thank in advance
multiline
andalign
at the same time? It seems like you are missing alignment characters (ampersands&
).