Vectors Help
Question 5 [20 marks]. Let
A =
0 −1 3
1 0 −3
1 2 0
, B =
3 −2
−3 1
2 −1
and C =
−2 −2 3
2 1 0
−1 1 −2
.
(a) For each of the expressions B
2
, BA, CB, CA, A−4B, and −A+5C, state whether or not
it exists, and if it exists then evaluate it.
A =
0 −1 3
1 0 −3
1 2 0
, B =
3 −2
−3 1
2 −1
and C =
−2 −2 3
2 1 0
−1 1 −2
.
(a) For each of the expressions B
2
, BA, CB, CA, A−4B, and −A+5C, state whether or not
it exists, and if it exists then evaluate it.
Original post by theoneandonlyyo
Question 5 [20 marks]. Let
A =
0 −1 3
1 0 −3
1 2 0
, B =
3 −2
−3 1
2 −1
and C =
−2 −2 3
2 1 0
−1 1 −2
.
(a) For each of the expressions B
2
, BA, CB, CA, A−4B, and −A+5C, state whether or not
it exists, and if it exists then evaluate it.
A =
0 −1 3
1 0 −3
1 2 0
, B =
3 −2
−3 1
2 −1
and C =
−2 −2 3
2 1 0
−1 1 −2
.
(a) For each of the expressions B
2
, BA, CB, CA, A−4B, and −A+5C, state whether or not
it exists, and if it exists then evaluate it.
your formatting hasn't come out very well - are these supposed to be matrices or something else? Can you upload a picture of the question?
Reply 2
Original post by davros
your formatting hasn't come out very well - are these supposed to be matrices or something else? Can you upload a picture of the question?
Yes sorry about that.
Reply 3
What have you tried? Looks like a standard "can you do matrix addition/multiplication" exercise.
In case you forgot a quirk about matrix algebra...
In case you forgot a quirk about matrix algebra...
Spoiler
Original post by theoneandonlyyo
Yes sorry about that.
As tony says, this is just a "bookwork" question - what rules need to be satisfied so that you can add or multiply two matrices? This should be in your textbook or course notes; failing that, a quick google will probably tell you the answer on the first line of the search results
Quick Reply
Related discussions
- A level p3 maths
- Physics help please
- Line of intersection between two planes
- maths mech question
- Finding Normal vector to a plane
- vectors and mechanics
- Mechanics AL Maths Question
- A level maths vectors help
- parallel vectors with missing values
- Help needed urgently with Gibson Assembly question!!
- maths question help please
- Vectors Question Help
- GCSE Hardest Maths Questions
- CP1 Vectors Q help
- Edexcel AS further maths - Core Pure 1 (15th May 2023)
- Maths mech question
- HNC Engineering Maths - Vector Diagrams
- Higher maths question help
- Physics Problem Help
- A level vectors help
Latest
Trending
