mkumar441
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 Manoj kumar
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mkumar441:
Group Title
An urn contains one black ball and three white balls. Four balls are drawn from the urn.Let ik = 1 if the outcome of the kth draw is black a…
 updated 2 years ago
 No Medals Yet
Mathematics

mkumar441:
Group Title
An urn contains one black ball and three white balls. Four balls are drawn from the urn.Let ik = 1 if the outcome of the kth draw is black a…
 updated 2 years ago
 No Medals Yet
Mathematics

mkumar441:
Group Title
the variance of a real random variable X with mean as
the expectation of (Xmu)2. Is this denition reasonable for complexvalued random…
 updated 2 years ago
 No Medals Yet
Mathematics

mkumar441:
Group Title
the variance of a real random variable X with mean as
the expectation of (Xmu)2. Is this denition reasonable for complexvalued random…
 updated 2 years ago
 No Medals Yet
Mathematics

mkumar441:
Group Title
how to find left null space ?
 updated 2 years ago
 3 replies
 2 Medals
Mathematics

mkumar441:
Group Title
Explain why the pivot rows and pivot columns of A (not R) always give an r by r invertible submatrix of A.
…
 updated 2 years ago
 2 replies
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Mathematics

mkumar441:
Group Title
.Suppose A is an m by n matrix of rank r.Its reduced echelon form is R.
Describe exactly reduced row echelon form of R transpose (not A tr…
 updated 2 years ago
 3 replies
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Mathematics

mkumar441:
Group Title
please solve this ...
suppose A and B are n by n matrices,and AB=I.prove from rank(AB)<=rank(A) that the rank of A is n . So A is invertibl…
 updated 2 years ago
 14 replies
 1 Medal
Mathematics

mkumar441:
Group Title
How can you say the set of linear equations are solvable or not?
For example:
2x+3y=4
…
 updated 2 years ago
 5 replies
 1 Medal
Mathematics

mkumar441:
Group Title
1. Forward elimination changes Ax = b to a row reduced Rx = d: the complete solution is
x=(4,0,0)+c1(2,1,0)+c2(5,0,1)
(a) What is the 3 by…
 updated 2 years ago
 No Medals Yet
Mathematics

mkumar441:
Group Title
1. Forward elimination changes Ax = b to a row reduced Rx = d: the complete solution is
x=(4,0,0)+c1(2,1,0)+c2(5,0,1)
(a) What is the 3 by…
 updated 2 years ago
 No Medals Yet
Mathematics