(a) The n × n matrices A, B, C, and X satisfy the equation AX(B
+ CX) ?1 = C Write an expression for the matrix X in terms of A, B,
and C. You may assume invertibility of any matrix when
necessary.
(b) Suppose D is a 3 × 5 matrix, E is a 5 × c matrix, and F is a
4 × d matrix. Find the values of c and d for which the statement
“det(DEF) =...
Consider A, B and C, all nxn matrices.
Show that:
1) det(A)=det(A^T)
2) if C was obtained from A by changing the i-th row (column) with
the j-th row (column). Show that det(C)=-det(A)
3) det(AB)=det(A)det(B)
4) Let C be a matrix obtained from A by multiplying a row by c ∈ F.
Show that det(B)=c · det(A)
1. Let α < β be real numbers and N ∈ N.
(a). Show that if β − α > N then there are at least N
distinct integers strictly between β and α.
(b). Show that if β > α are real numbers then there is a
rational number q ∈ Q such β > q > α.
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2. Let x, y, z be real numbers.The absolute value of x is
defined by
|x|= x, if x ≥...
Complete the following
program so that C = A*B where A and B are the matrices defined
below.
N=4;
M=3;
A=rand(M,N);
B=rand(N,M);
C = ?
for m = 1: M
for n = 1
: ?
for p = 1 : ?
C (m,n) =
?
end
end
end
You may upload a
script
prove that where a,b,c,d,e are real numbers with (a) not equal
to zero. if this linear equation ax+by=c has the same solution set
as this one : ax+dy=e, then they are the same equation.
Let A and B be sets of real numbers such that A ⊂ B. Find a
relation among inf A, inf B, sup A, and sup B.
Let A and B be sets of real numbers and write C = A ∪ B. Find a
relation among sup A, sup B, and sup C.
Let A and B be sets of real numbers and write C = A ∩ B. Find a
relation among sup A, sup B, and sup...
Write a program in C that sorts 3 given numbers, defined as
(a,b,c) from highest to lowest.
I already have this code finding the maximum. Need to just add
the sorting code onto it.
int A, B, C;
A = 4;
B=3;
C=7;
Max = A
If (B > max)
{
Max = B;
}
Else if (c > max)
{
Max = c;
}
The command C = max(A,B) compares corresponding values in the A
and B matrices assuming they are the same size. The problem is that
MATLAB’s native version does not tell you from which matrix it
found the largest value. Write a new function (in MATLAB)
[C,from_which] = max_new(A,B) that also output a matrix, the same
size as the inputs, with either 1’s or 2’s depending on from which
matrix the larger value was found. Include a live script that tests...
a)Find the value or values of c that satisfy the equation
f(b)-f(a)/b-a = f′(c)in the conclusion of the Mean Value Theorem
for the function and interval. Round to the nearest thousandth.
f(x) ln(x-3), [4,7]
b)Suppose that
c(x)=3x^3-40x^2+6844x is the cost of manufacturing x items.
Find a production level that will minimize the average cost of
making x items.
c)A rectangular field is to be enclosed on four sides with a
fence. Fencing costs $6 per foot for two opposite sides,...