BIG POINTTT....No 3 dan 4jwban yg bner dpet big point,like,dan

Berikut ini adalah pertanyaan dari ferrylselalusetia pada mata pelajaran Matematika untuk jenjang Sekolah Menengah Pertama

BIG POINTTT....No 3 dan 4
jwban yg bner dpet big point,like,dan ku follow
⊂(ο･㉨･ο）⊃
jgn asal yah^^ಥ⌣ಥ
BIG POINTTT....No 3 dan 4jwban yg bner dpet big point,like,dan ku follow⊂(ο･㉨･ο）⊃jgn asal yah^^ಥ⌣ಥ

Jawaban dan Penjelasan

Berikut ini adalah pilihan jawaban terbaik dari pertanyaan diatas.

$\purple{\huge{\mathfrak{3a.}}}$

$\red{\huge{\sf A^t=\left[\begin{array}{ccc}2&3&1\\-1&1&-2\end{array}\right]}}$

$\red{\huge{\sf B^t=\left[\begin{array}{ccc}1&0\\-1&2\\0&3\end{array}\right]}}$

$\\$

$\purple{\huge{\mathfrak{3b.}}}$

$\sf 2A+B^t=2\left[\begin{array}{ccc}2&-1\\3&1\\1&-2\end{array}\right]+\left[\begin{array}{ccc}1&0\\-1&2\\0&3\end{array}\right]$

$\sf 2A+B^t=\left[\begin{array}{ccc}4&-2\\6&2\\2&-4\end{array}\right]+\left[\begin{array}{ccc}1&0\\-1&2\\0&3\end{array}\right]$

$\sf 2A+B^t=\left[\begin{array}{ccc}4+1&-2+0\\6+(-1)&2+2\\2+0&-4+3\end{array}\right]$

$\red{\huge{\sf 2A+B^t=\left[\begin{array}{ccc}5&-2\\5&4\\2&-1\end{array}\right]}}$

$\\$

$\purple{\huge{\mathfrak{3c.}}}$

$\sf A\times B=\left[\begin{array}{ccc}2&-1\\3&1\\1&-2\end{array}\right]\left[\begin{array}{ccc}1&-1&0\\0&2&3\end{array}\right]$

$\sf A\times B=\left[\begin{array}{ccc}(2\times 1)+(-1\times 0)&(2\times -1)+(-1\times 2)&(2\times 0)+(-1\times 3)\\(3\times 1)+(1\times 0)&(3\times -1)+(1\times 2)&(3\times 0)+(1\times 3)\\(1\times 1)+(-2\times 0)&(1\times -1)+(-2\times 2)&(1\times 0)+(-2\times 3)\end{array}\right]$

$\red{\huge{\sf A\times B=\left[\begin{array}{ccc}2&-4&-3\\3&-1&3\\1&-5&-6\end{array}\right]}}$

$\\$

$\purple{\huge{\mathfrak{4.}}}$

$\left[\begin{array}{ccc}\red{\boxed{1}}&\green{\boxed{a}}&6\\-3&\blue{\boxed{7}}&\pink{\boxed{c}}\end{array}\right]=\left[\begin{array}{ccc}\red{\boxed{d-4}}&\green{\boxed{4}}&6\\-3&\blue{\boxed{b+2}}&\pink{\boxed{8}}\end{array}\right]$