Practice problem
What is the inverse of [8675105468]\begin{bmatrix}8&6&7\\5&10&5\\4&6&8\end{bmatrix}8546106758?
[521−135−421−221635−142−121−435521]\begin{bmatrix}\dfrac5{21}&-\dfrac1{35}&-\dfrac4{21}\\-\dfrac2{21}&\dfrac6{35}&-\dfrac1{42}\\-\dfrac1{21}&-\dfrac4{35}&\dfrac5{21}\end{bmatrix}215−212−211−351356−354−214−421215
[521135−421221635142−121435521]\begin{bmatrix}\dfrac5{21}&\dfrac1{35}&-\dfrac4{21}\\\dfrac2{21}&\dfrac6{35}&\dfrac1{42}\\-\dfrac1{21}&\dfrac4{35}&\dfrac5{21}\end{bmatrix}215212−211351356354−214421215
[521−221−121−135635−435−421−142521]\begin{bmatrix}\dfrac5{21}&-\dfrac2{21}&-\dfrac1{21}\\-\dfrac1{35}&\dfrac6{35}&-\dfrac4{35}\\-\dfrac4{21}&-\dfrac1{42}&\dfrac5{21}\end{bmatrix}215−351−214−212356−421−211−354215
This matrix does not have an inverse.
Type a concept, like “slope” or “photosynthesis”.
