mhsjdm5881 mhsjdm5881

23-10-2017
Mathematics

contestada

Suppose a and b are 3x3 matrices, with det(a) = 5 and det(b) = 3.
a. det(2a) = ? 4 pts
b. det((ab)-1) = ?

Respuesta :

LammettHash LammettHash

27-10-2017

[tex]\det(2\mathbf A)=2^3\det\mathbf A=8\times5=40[/tex]

[tex]\det(\mathbf{AB})^{-1}=\dfrac1{\det\mathbf{AB}}=\dfrac1{\det\mathbf A\det\mathbf B}=\dfrac1{5\times3}=\dfrac1{15}[/tex]

Answer Link

Otras preguntas

I need an answer asap please

Analyzing Solution Sets to Linear Equations with the Variable on Both Sides

Rubidium-86 (86Rb) undergoes beta decay. A 9.52 x 10^−5 mol sample of 86Rb emits 8.87 x 10^16 beta particles in one hour. Calculate the half-life (in hours) for

Learn with an example or Watch a video D ◄) In which story could you use the quotient -11,000+ 16 to answer the question? The change in elevation from Badwater

A bird flies at the top speed of 20,000 meters per hour. The bird flies 30,000 meter without stopping. for how many hours did the bird fly if it flew at top sp

The price of a certain TV has change from $278-$319 what is the absolute change in the price of the TV

Which question helps you understand a cause and effect relationship between words?(1 point) Responses Where did it happen? Where did it happen? How important is

Cumulative check 1 2 3 4 5 6 7 8 9 Read the text and circle the correct answers. Unusual instruments My uncle is a musician, but he (1)... normal instruments li

Unlike the Anti-Federalists, the federalists believed

The ________________ Church was the Eastern half of the Christian church and the ________________ Church was the Western half of the Christian church after the