Tentukan semua nilai P sehingga det (A) = 0
A=[-5 p+4]
[p-2 1]
A=[-5 p+4]
[p-2 1]
andrecost
A=![det(A)=0\\\ \left[\begin{array}{ccc}-5&p+4\\p-2&1\\\end{array}\right] =(-5x1)-(p+4)(p-2)=\\ (-5x1)-(p+4)(p-2)=hasilnya harus 0,-5(p+4)(p-2)=0,\\bilangan apa saja dikalikan 0 =0\\ p=-4 dan p=2](https://tex.z-dn.net/?f=det%28A%29%3D0%5C%5C%5C++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-5%26p%2B4%5C%5Cp-2%261%5C%5C%5Cend%7Barray%7D%5Cright%5D+%3D%28-5x1%29-%28p%2B4%29%28p-2%29%3D%5C%5C%0A%28-5x1%29-%28p%2B4%29%28p-2%29%3Dhasilnya+harus+0%2C-5%28p%2B4%29%28p-2%29%3D0%2C%5C%5Cbilangan+apa+saja+dikalikan+0++%3D0%5C%5C%0Ap%3D-4+dan+p%3D2 "det(A)=0\\\ \left[\begin{array}{ccc}-5&p+4\\p-2&1\\\end{array}\right] =(-5x1)-(p+4)(p-2)=\\ (-5x1)-(p+4)(p-2)=hasilnya harus 0,-5(p+4)(p-2)=0,\\bilangan apa saja dikalikan 0 =0\\ p=-4 dan p=2")
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Thanks 1
meinindita
Bilanganapasa bilangan apaan kak?
andrecost
maksudnya bilangan apa saja dikalikan 0 = 0,terus yang ada tulisan x tu maksudnya kali,moga-2 paham
andrecost
yang atas ada yg salah kiranya maaf -5 - (p+4)(p-2)=0 , (p+4)(p-2)=5, p^2+2p-8=5, p^2+2p-13=0 (p+1)^2-14=0 , (p+1)^2=14,
andrecost
(p+1)=+-akar14, p=+-akar14-1 , p1=akar14-1 ,p2=-akar14-1
andrecost
caranya nyari akarnya pakai pelengkapan kuadrat sempurna,
andrecost
nilai p=akar14-1 danp=-akar14-1
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