Question

givne a matrix A m by n.....there exist matrices C and D such that such that cA = I of n by n and AD = I m by m
prove that C=D and m =n

Answer 1

the problem is one of inverse matrices.
given
\[AA^{-1} = A^{-1}A=I_x\] where x is the dimension of a square matrix,

the rest should follow

Answer 2

Suppose A is an m n matrix and there exist matrices C and D such that CA = In and
AD = Im. Prove that m = n and C = D.

Answer 3

\[X_{mn}Y_{kl}=Z_{ml}\] and \[n=m\] for any matrices X,Y
Since \[I_n\] is a square matrix
\A_{mn}C_{xy}=I_{n} \quad n=x,\text { and }m=y=n \]

Answer 4

\[A_{mn}C_{xy}=I_{n} \quad n=x,\text { and }m=y=n \]

Answer 5

sorry, and \[n=k\]

Answer 6

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Answer 7

calc iii solution check

Answer 8

find max and min of x^2 + y^2 subject to the constraint x^2 - 8x +y^2 - 10y = 0

Answer 9

calc iii lagrange multipliers problem

Answer 10

Emotional effects of steroid use seem to depend on the _______ of the steroid used.

Answer 11

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Answer 12

Luella has a pond in her yard. She wants to surround it with 330 feet of fencing. The fencing is sold by the yard. How many yards should she buy?

Answer 13

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Answer 14

https://i.imgur.com/Wjmpc6D.png

Answer 15

Assessment items
Assessment started: undefined.
Item 1

Read the passage.

Dark Star

Giselle leaned against the mahogany bay horse, stroking the white diam

Answer 16

Okay I was gone for a minute BUT I'M BACK NOW

Answer 17

the scatter plot presents Ray's monthly electricity bills and amount of time ray

Answer 18

Which word shares a connotative meaning with the word cheap as it is used in this sentence?

Ashley thought her parents were being cheap when they bought ge

Answer 19

Which revision fixes the dangling modifier in the sentence?

Rowing through the rapids, the canoe began to fill with water.

Answer 20

dangling modifier

Answer 21

Misplaced Modifiers

Answer 22

For which literary work did Joseph Heller use his military experiences as a prima

Answer 23

Calc III Tutorial: Lagrange Multipliers

Answer 24

Can someone translate this for me?

Answer 25

Find the interest due on $1,090 at 8% for 5 years.

43.60
68.13
436.00
681.25