Carilah nilai A dan B memenuhi persamaan![\left[\begin{array}{ccc}a2.b2&-2ab\\2ab&a2-b2&\\\end{array}\right] + \left[\begin{array}{ccc}a&-b&\\b&a\\\end{array}\right] + \left[\begin{array}{ccc}1&0&\\0&1\\\end{array}\right] = \left[\begin{array}{ccc}0&0\\0&o\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da2.b2%26-2ab%5C%5C2ab%26a2-b2%26%5C%5C%5Cend%7Barray%7D%5Cright%5D+%2B+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da%26-b%26%5C%5Cb%26a%5C%5C%5Cend%7Barray%7D%5Cright%5D+%2B+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%260%26%5C%5C0%261%5C%5C%5Cend%7Barray%7D%5Cright%5D+%3D+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%260%5C%5C0%26o%5C%5C%5Cend%7Barray%7D%5Cright%5D "\left[\begin{array}{ccc}a2.b2&-2ab\\2ab&a2-b2&\\\end{array}\right] + \left[\begin{array}{ccc}a&-b&\\b&a\\\end{array}\right] + \left[\begin{array}{ccc}1&0&\\0&1\\\end{array}\right] = \left[\begin{array}{ccc}0&0\\0&o\\\end{array}\right]")
saifulindo
![\left[\begin{array}{ccc}2a.2b&-2ab&\\2ab&2a-2b&\end{array}\right] = \left[\begin{array}{ccc}-1&0&\\0&-1&\end{array}\right] - \left[\begin{array}{ccc}a&-b&\\b&a&\end{array}\right] \\ \\ \left[\begin{array}{ccc}2a.2b&-2ab&\\2ab&2a-2b&\end{array}\right]=\left[\begin{array}{ccc}-1-a&b&\\-b&-1-a&\end{array}\right] \\ jadi : \\ 2ab=-b \\ 2a= \frac{-b}{b} \\ 2a=-1 \\ a= \frac{1}{2} \\ \\ 2a-2b=-1-a \\ 2 \frac{1}{2} -2b=-1- \frac{1}{2} \\ -2b=-1- \frac{1}{2} -1 \\ -2b=- \frac{1}{2} \ b=-\frac{1}{4}](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2a.2b%26-2ab%26%5C%5C2ab%262a-2b%26%5Cend%7Barray%7D%5Cright%5D+%3D++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1%260%26%5C%5C0%26-1%26%5Cend%7Barray%7D%5Cright%5D+-+++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da%26-b%26%5C%5Cb%26a%26%5Cend%7Barray%7D%5Cright%5D++%5C%5C++%5C%5C++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2a.2b%26-2ab%26%5C%5C2ab%262a-2b%26%5Cend%7Barray%7D%5Cright%5D%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1-a%26b%26%5C%5C-b%26-1-a%26%5Cend%7Barray%7D%5Cright%5D+%5C%5C++jadi+%3A+%5C%5C+2ab%3D-b+%5C%5C+2a%3D+%5Cfrac%7B-b%7D%7Bb%7D++%5C%5C+2a%3D-1+%5C%5C+a%3D+%5Cfrac%7B1%7D%7B2%7D++%5C%5C++%5C%5C+2a-2b%3D-1-a+%5C%5C+2+%5Cfrac%7B1%7D%7B2%7D++-2b%3D-1-+%5Cfrac%7B1%7D%7B2%7D++%5C%5C+-2b%3D-1-+%5Cfrac%7B1%7D%7B2%7D+-1+%5C%5C+-2b%3D-+%5Cfrac%7B1%7D%7B2%7D+%5C+b%3D-%5Cfrac%7B1%7D%7B4%7D "\left[\begin{array}{ccc}2a.2b&-2ab&\\2ab&2a-2b&\end{array}\right] = \left[\begin{array}{ccc}-1&0&\\0&-1&\end{array}\right] - \left[\begin{array}{ccc}a&-b&\\b&a&\end{array}\right] \\ \\ \left[\begin{array}{ccc}2a.2b&-2ab&\\2ab&2a-2b&\end{array}\right]=\left[\begin{array}{ccc}-1-a&b&\\-b&-1-a&\end{array}\right] \\ jadi : \\ 2ab=-b \\ 2a= \frac{-b}{b} \\ 2a=-1 \\ a= \frac{1}{2} \\ \\ 2a-2b=-1-a \\ 2 \frac{1}{2} -2b=-1- \frac{1}{2} \\ -2b=-1- \frac{1}{2} -1 \\ -2b=- \frac{1}{2} \ b=-\frac{1}{4}")
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sofiaaprilia666
soalnya nggak salah kah??? punya saya a^2.b^2 sama , a^2-b^2
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