1. find an lu factorization of the following matrix. (20pts) [ 30 17 16 1 1 l- 31 o 2. find (a) nullspace (b) a basis for the column space and (c) the rank of the matrix. (20pts)

answer: the correct one is a

step-by-step explanation:

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

d

step-by-step explanation:

i used the pitagoras theoreme