Math & Science ⇒ Matrix power

[adnaniut]

I want to write a matrix raised to some power; and error in the other part of code. Can anyone help me please

Adnan

Code: Select all

\left[
\begin{array}{c | c}
A  & B \\ \hline
C  & D
\end{array}
\right]^{-1}

Code: Select all

\begin{align*}
& \left[
\displaystyle \begin{array}{c c c c c c c c c c c}
\frac{1-q_2^}{q_2^n} & \frac{1-q_2}{q_2^{n-1}} & \frac{1-q_2}{q_2^{n-2}}  &\cdots & \frac{1-q_2}{q_2} & \frac{1}{q_2} & 1 & 0 & \cdots &0
\end{array}\right] \times
\left[
\begin{array}{c}
1 \\
\vdots \\
\vdots \\
\vdots \\
1 \\
\end{array}\right] \\
& = \frac{(1-q_2)+(q_2-q_2^2)+(q_2^2-q_2^3)+ \cdots +(q_2^{n-2}-q_2^{n-1})+(q_2^{n-1})+q_2^n+0+ \cdots +0}{q_2^n} \\
& = \frac{1 + q_2^n}{q_2^n}
\end{align*}

[gmedina]

Hi,

please post complete, minimal code and not just snippets.

[gmedina]

Code: Select all

\begin{align*}
& \left[
\displaystyle \begin{array}{c c c c c c c c c c c}
\frac{1-q_2^}{q_2^n} & \frac{1-q_2}{q_2^{n-1}} & \frac{1-q_2}{q_2^{n-2}}  ...

In the quoted code, there's a missing power (or an extra ^ character) in the numerator of the first \frac command.