TR_part2_TOEC/matrix7.tex at main · chibixar/TR_part2_TOEC · GitHub

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\documentclass{article}
\usepackage{amsmath}
\begin{document}

\textbf{7. Определяем токи в ветвях исходной схемы методом контурных токов}

\begin{align*}
Z_1 &:= 89 + 47i & Z_2 &:= 44 \\
Z_3 &:= -22i & Z_4 &:= 81i \\
Z_5 &:= 55 - 27i & Z_6 &:= -30i \\
Z_7 &:= 63 - 42i \\
E_5 &:= -15.460 + 34.710i & J_6 &:= -3.910 - 5.800i
\end{align*}

\[
B := \begin{pmatrix}
0 & 1 & 1 & 1 & 0 & 0 & -1 \\
1 & 0 & 0 & 0 & 1 & 1 & 1
\end{pmatrix}
\]

\[
E := \begin{pmatrix} 0 \\ 0 \\ 0 \\ 0 \\ E_5 \\ 0 \\ 0 \end{pmatrix}, \quad
J := \begin{pmatrix} 0 \\ 0 \\ 0 \\ 0 \\ 0 \\ J_6 \\ 0 \end{pmatrix}
\]

\[
RD := \text{diag}(Z_1, Z_2, Z_3, Z_4, Z_5, Z_6, Z_7)
\]

\[
Ik := (B \cdot RD \cdot B^T)^{-1} \cdot (B \cdot E + B \cdot RD \cdot J)
\]

\[
I := B^T \cdot Ik - J = \begin{pmatrix}
-0.976 + 0.779i \\
-0.132 + 0.863i \\
-0.132 + 0.863i \\
-0.132 + 0.863i \\
-0.976 + 0.779i \\
2.938 + 6.582i \\
-0.844 - 0.087i
\end{pmatrix}
\]

\end{document}