![A)\ \ \ \ \left[\begin{array}{ccc}8&-5\\-3&2\\\end{array}\right]](/tpl/images/0571/2778/7b34b.png)
![\left[\begin{array}{ccc}2&5\\3&8\\\end{array}\right]](/tpl/images/0571/2778/46618.png)
, it's inverse is calculated using the formula:![\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right]^{-1}=\frac{1}{det\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right] }\left[\begin{array}{ccc}d&-b\\-c&a\\\end{array}\right]](/tpl/images/0571/2778/f4dea.png)
![\frac{1}{det\left[\begin{array}{ccc}2&5\\3&8\\\end{array}\right] }\left[\begin{array}{ccc}8&-5\\-3&2\\\end{array}\right] \\\\\\\\\#det\left[\begin{array}{ccc}2&5\\3&8\\\end{array}\right] =1\\\\\\\\=\frac{1}{1}\left[\begin{array}{ccc}8&-5\\-3&2\\\end{array}\right] \\\\\\\\=\left[\begin{array}{ccc}8&-5\\-3&2\\\end{array}\right]](/tpl/images/0571/2778/75304.png)
![\left[\begin{array}{ccc}8&-5\\-3&2\\\end{array}\right]](/tpl/images/0571/2778/d7b2e.png)
Consider the matrix shown below:
...
Answers: 3
Another question on Mathematics
Mathematics, 21.06.2019 19:40
Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?
Answers: 1
Mathematics, 21.06.2019 21:30
The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?
Answers: 3
Mathematics, 21.06.2019 21:30
Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.
Answers: 1
Mathematics, 22.06.2019 02:00
Alistair has 5 half-pounds chocalate bars. it takes 1 1/2 pounds of chocalate,broken into chunks, to make a batch of cookies. how many batches can alistair mke with chocalate he has on his hand?
Answers: 1
You know the right answer?
Questions
Chemistry, 19.04.2021 16:10
History, 19.04.2021 16:10
History, 19.04.2021 16:10
Chemistry, 19.04.2021 16:10
Computers and Technology, 19.04.2021 16:10
Mathematics, 19.04.2021 16:10
Mathematics, 19.04.2021 16:10
English, 19.04.2021 16:10
