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 Evgeny Kuznetsov
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Questions Asked

syltan:
Group Title
It is often stated that new immigrants push down Canadian wages because they increase the supply of labour. Using the fact that the demand f…
 updated one month ago
 No Medals Yet
Mathematics

syltan:
Group Title
1. A firm’s marginal cost function is MC = – 5 + q, where q is the firm’s quantity
produced. Assume zero fixed cost. The market demand is Q…
 updated one month ago
 3 replies
 No Medals Yet
Mathematics

syltan:
Group Title
Show that if A is a diagonal matrix with diagonal elements a1, a2, . . . , an, then exp(At) is
also a diagonal matrix with diagonal element…
 updated 8 months ago
 2 replies
 1 Medal
Mathematics

syltan:
Group Title
Now let the point (a; b; c) lie on the surface S. For which value(s) of the constant p does the line given in parametric form as
x = a + t;…
 updated one year ago
 No Medals Yet
Mathematics

syltan:
Group Title
One mark is awarded to a correct answer for a multiple choice question; zero mark, otherwise.
Denote the probability that a student knows t…
 updated one year ago
 19 replies
 1 Medal
Mathematics

syltan:
Group Title
8. Let X ∼ N(9.4, 2), Y ∼ N(−2.1, 0.75) and Cov(X, Y ) = 1.75. What is P(X + 4Y > 0)?
…
 updated one year ago
 No Medals Yet
Mathematics

syltan:
Group Title
x + 3y 2z = 4 and 2x + y = 1
what is the line of intersection?
 updated one year ago
 31 replies
 1 Medal
Mathematics

syltan:
Group Title
6. Let X and Y be two r.v.s. with E(X) = E(Y ) = 0, Cov(X, Y ) = 1, V (X) = 1 and V (Y ) = 2.
What is the expectation of (X + 1)(X − 3Y )?
…
 updated one year ago
 4 replies
 2 Medals
Mathematics

syltan:
Group Title
Suppose r.v. X takes values 1, 2, 3, 4. If its p.m.f. is given in the following table, what is the
conditional probability P(X = 32 ≤ X ≤ …
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

syltan:
Group Title
Let w = y + f(x^2, y^2), where f is a differentiable function of one variable.
Show that
y*dw/dx+ x*dw/dy= x
 updated one year ago
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Mathematics

syltan:
Group Title
what can you say about value s and t if both of following matrix are similar?
 1 2 s   4 5 8 
…
 updated one year ago
 No Medals Yet
Mathematics

syltan:
Group Title
determine whether vectors are linearly independent
v1=(3,8,7,3) v2=(1,5,3,1) v3=(2,1,2,6) v4=(1,4,0,3)
ok i know to be linearly indepe…
 updated one year ago
 11 replies
 1 Medal
Mathematics

syltan:
Group Title
Problem: A curve C is the locus of points in the xyplane which are equidistant from the point (0,7.25 ) and the line (y=7.25). Identify …
 updated one year ago
 13 replies
 2 Medals
Mathematics

syltan:
Group Title
Is it possible to make an output c++ window to be white?
I need somehow to printout a screen out put of program that i wrote.
Any ideas?
 updated one year ago
 6 replies
 1 Medal
Mathematics

syltan:
Group Title
A link list problem, i need some how to sort and print out an object by surname in alphabetical order.
i have a try to do that by this code…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

syltan:
Group Title
find a vector function that parametrizes the curve C of intersection of the cylinder y^2+4^2=9 and the plane 6xy+2z3=0, oriented clockwise…
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

syltan:
Group Title
need help in c++
somewhere in main
…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

syltan:
Group Title
integrate x*e^x
 updated one year ago
 3 replies
 2 Medals
Mathematics

syltan:
Group Title
1)
Let a = (a1 a2 a3) and c (c1 c2 c3)= be any vectors in R3, and let k be the usual unit vector. Prove the following identity:
a .(k x …
 updated one year ago
 No Medals Yet
Mathematics

syltan:
Group Title
a bag contains 5 blue balls, 3 white balls, 2 red balls.
if we peak 6 balls randomly what is probability to peak 3 blue 2 white and 1 red?
 updated one year ago
 8 replies
 2 Medals
Mathematics

syltan:
Group Title
Suppose A and B are disjoint and P(not A)=0.63
what is min/max value of P(B)
 updated one year ago
 7 replies
 No Medals Yet
Mathematics

syltan:
Group Title
find point of intersection of line and plane.
x=95t , y=1t , z=3+t ;
…
 updated one year ago
 6 replies
 1 Medal
Mathematics

syltan:
Group Title
Consider the three points P(1;
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

syltan:
Group Title
Three identical point charges, each with a charge equal to q, lie in the xy plane. Two of the
charges are on the y axis at y = a and y = +…
 updated one year ago
 8 replies
 2 Medals
Mathematics

syltan:
Group Title
need help with series agian
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

syltan:
Group Title
help with series
 updated one year ago
 10 replies
 2 Medals
Mathematics

syltan:
Group Title
Two straight conducting rails form a right angle where their ends are joined. A conducting bar
in contact with the rails starts at the vert…
 updated one year ago
 3 replies
 1 Medal
Mathematics

syltan:
Group Title
integrate root(x^(2)+1)
how to substitute here
 updated one year ago
 19 replies
 4 Medals
Mathematics

syltan:
Group Title
integrate sin(sqrt(a*t)dt
 updated one year ago
 9 replies
 2 Medals
Mathematics

syltan:
Group Title
An infinitely long solid insulating cylinder of radius a = 5.4 cm is positioned with its symmetry axis along the zaxis as shown. The cylind…
 updated one year ago
 3 replies
 2 Medals
Mathematics

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