tebere
tebere tebere
  • 13-02-2021
  • Mathematics
contestada

Given matrix A below, calculate det[A] twice using minors and cofactors

[tex]A = \left[\begin{array}{ccc}1&2&3\\3&4&5\\6&7&8\end{array}\right][/tex]

Pivot on:
a) row 2, and also
b) column 3

Respuesta :

greenforestaz
greenforestaz greenforestaz
  • 13-02-2021

Answer:

a. 3(16-21) - 4(8-18) +5(7-12) = -15 + 40 - 25 = 0

b. 3(21-24) - 5(7-12) + 8(4-6) = -9 + 25 - 16 = 0

Answer Link

Otras preguntas

What is the minimum value an eccentricity can be?
a fossil form when an organism buried in sediment dissolves leaving a hollow area
Put these in order from least to greatest 6.4 kg 640 g 600,000 mg
how are continents and tectonic pates related
solving fraction equations:  Write the solution in simplest form 6 1/4 = z + 1 5/8
the difference between food chain and food web
What's the scientific name of a flathead bullhead catfish?
A park is in the shape of a rectangle 2 miles long and 1.5 miles wide. How much shorter if you walk diaganolly across the park rather than along two sides?
how are continents and tectonic pates related
A park is in the shape of a rectangle 2 miles long and 1.5 miles wide. How much shorter if you walk diaganolly across the park rather than along two sides?