Loser66
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0 
Questions Asked

Loser66:
Group Title
\(f:R^2\rightarrow R\\(a,b)\rightarrow a\), f is continous, and A x B connected in R^2
if \(B=\emptyset\) , then A is connected
howabout …
 updated 11 minutes ago
 2 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
I read but not know why they said so. Please, explain me.
…
 updated 9 hours ago
 11 replies
 2 Medals
Mathematics

Loser66:
Group Title
I don't see how:
if \(r_1(t) = (1t)P+t (1,0) ~~~0\leq t\leq1\)
\(r_2(t) =(1t)(1,0) + tQ~~~0\leq t\leq 1\)
…
 updated 20 hours ago
 68 replies
 4 Medals
Mathematics

Loser66:
Group Title
Someone explain me, please. Examples 11.2.3b
 updated yesterday
 8 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Show that the set is not compact by exhibiting an open cover with no finite subcover
\(A=\{x \in R^n  x<1\}\)
Please, help
 updated 2 days ago
 61 replies
 3 Medals
Mathematics

Loser66:
Group Title
Let A be a bounded set in \(R^n\). Prove that cl (A) is compact.
Please, help.
…
 updated 2 days ago
 26 replies
 2 Medals
Mathematics

Loser66:
Group Title
Is there any link between gamma distribution and normal distribution?
Please, help
 updated 3 days ago
 14 replies
 4 Medals
Mathematics

Loser66:
Group Title
Without using chisquare, if \(M(t)= e^{500t +5000t^2}\)
find \(P(27060\leq (X500)^2\leq 50240)\)
Please, help
 updated 4 days ago
 17 replies
 1 Medal
Mathematics

Loser66:
Group Title
Is [0,1] \(\cup\) (2,3] connected? Prove or disprove
I don't know how to start, please, help
 updated 4 days ago
 56 replies
 3 Medals
Mathematics

Loser66:
Group Title
Find the constant c so that f(x) is a pdf of a random variable:
f(x)= 4x^c \(0\leq x\leq 1\)
Please, help
 updated 4 days ago
 No Medals Yet
Mathematics

Loser66:
Group Title
Let \(f(x,y ) =\dfrac{x+y}{32}\), x =1,2; y = 1,2,3,4
find \(P (1\leq Y\leq 3 X =1)\)
Please, help
 updated 4 days ago
 16 replies
 2 Medals
Mathematics

Loser66:
Group Title
Let f(x,y)= 8x(1y) 0 < y < 1 , and 0<x< 1y
Find P(Y< X  X <= 1/4)
Please, help
 updated 5 days ago
 108 replies
 7 Medals
Mathematics

Loser66:
Group Title
Statistics problem
Let T1,T2 be random times for a company to complete 2 steps in a certain process. Say T1 and T2 are measured in days and …
 updated 5 days ago
 15 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Help calculate the area of the graph of f(x,y) = 3/2
 updated 5 days ago
 29 replies
 3 Medals
Mathematics

Loser66:
Group Title
Let f(x,y) =3/2 \(x^2\leq y \leq 1\) \(0\leq x\leq 1\)
a)find \(P(0\leq X\leq 1/2)\)
b) find \(P (1/2 \leq Y \leq1\)…
 updated 4 days ago
 27 replies
 2 Medals
Mathematics

Loser66:
Group Title
Let f(x,y) =(3/16) xy^2 \(0\leq x\leq 2\) and \(0\leq y\leq 2\)
find \(P(X\leq Y)\)
Please, help
 updated 5 days ago
 8 replies
 1 Medal
Mathematics

Loser66:
Group Title
Let f(x,y)= 3/2, \(x^2\leq y\leq1\) and \(0\leq x\leq 1\)be the joint pdf of X and Y
a) find \(P(0\leq X\leq 1/2)\)
b) Find \(P(…
 updated 7 days ago
 2 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Need help on group theory. Problem 4.
Please, help
 updated 7 days ago
 8 replies
 1 Medal
Mathematics

Loser66:
Group Title
If B = {(x,y,z) in R^3  x^2+y^2 <1}
we define f : R^3 > R
f(x,y,z) = x^2 +y^2
…
 updated 8 days ago
 40 replies
 1 Medal
Mathematics

Loser66:
Group Title
Please, help
int (cl A) = int A?
I would like to know is there any way to figure out the answer before seeking a counterexample.
 updated 9 days ago
 63 replies
 1 Medal
Mathematics

Loser66:
Group Title
find accumulation points of the following set in R^2
a) {(p,q)  p, q rational}
b) {m/n, 1/n) m, n integers, n is not 0}
…
 updated 9 days ago
 19 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Let B in R^n be any set. Define:\(C=\{x\in R^n d(x, y)<1 for some y \in B\}\).
Show that C is open
Please, help
 updated 9 days ago
 4 replies
 1 Medal
Mathematics

Loser66:
Group Title
Use epsilondelta to prove
\[lim_{x\rightarrow 1}\dfrac{x+5}{2x+3}=4\]
Please, help
 updated 11 days ago
 29 replies
 1 Medal
Mathematics

Loser66:
Group Title
Let X=C([0,1]), the space of continous functions on the interval [0,1], and let \(f_\infty = sup\{f(x)~~:~~x\in[0,1]\}\). Show that \(…
 updated 12 days ago
 29 replies
 2 Medals
Mathematics

Loser66:
Group Title
Please help at problem 4.2_7
 updated 15 days ago
 4 replies
 1 Medal
Mathematics

Loser66:
Group Title
Use epsilondelta to prove
\[lim_{x\rightarrow 1}\dfrac{x+5}{2x+3}=4\]
Please, help
 updated 10 days ago
 42 replies
 1 Medal
Mathematics

Loser66:
Group Title
Someone help me please.
I don't understand part (ii) > (i)
 updated 16 days ago
 1 reply
 No Medals Yet
Mathematics

Loser66:
Group Title
Let G be a nontrivial finite group. Prove that there exists subgroups G0, G1,......Gn of G satisfying the following properties:
a) \(<e>=G_0…
 updated 16 days ago
 17 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Let G be a finite group
a) Prove there exists a normal subgroup N of G with the following property: There exists no normal subgroup N' of G…
 updated 17 days ago
 7 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Explain me, please
 updated 19 days ago
 71 replies
 4 Medals
Mathematics
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