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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 2 months 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 2 months 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 9 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
 No Medals Yet
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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