Loser66
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0 
Questions Asked

Loser66:
Group Title
How to prove \(\{1,\sqrt 2,\sqrt 3,\sqrt6\}\) form a basis? In other words, they are all linearly independent.
Please, help.
 updated 4 hours ago
 1 reply
 No Medals Yet
Mathematics

Loser66:
Group Title
Find the Jacobian formula for
f(x,y)= sin (x^2+y^3)
Please, help. Formula only
 updated yesterday
 20 replies
 1 Medal
Mathematics

Loser66:
Group Title
Ratio test question: if I have a series and I have to apply ratio test to consider whether it converges or not, does it matter if I switch t…
 updated yesterday
 8 replies
 2 Medals
Mathematics

Loser66:
Group Title
Converge or diverge?
\[\sum_{n=1}^\infty \dfrac{log(n+1)log n}{tan^{1}(2/n)}\]
Please, help
 updated yesterday
 6 replies
 1 Medal
Mathematics

Loser66:
Group Title
What is difference between them?
\(\sum_{n=0}^\infty \dfrac{n^n}{n!}x^n\) and \(\sum_{n=1}^\infty \dfrac{n^n}{n!}x^n\)
I have to find the r…
 updated 2 days ago
 39 replies
 3 Medals
Mathematics

Loser66:
Group Title
Find the radius of \[\sum_{n=1}^\infty \dfrac{(3)^n}{n^3}x^n\]
Please help
 updated 2 days ago
 4 replies
 1 Medal
Mathematics

Loser66:
Group Title
Give an example of a function defined on \(\mathbb R\) , which is continuous everywhere and fails to be differentiable at exactly n given po…
 updated 2 days ago
 35 replies
 2 Medals
Mathematics

Loser66:
Group Title
Need help to understand the concept. Theorem 1.2 on attachment. Please help
 updated 3 days ago
 2 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Converge or diverge? \(\alpha >0, \alpha \in \mathbb R\)
\[\sum_{n=1}^{\infty} sin (n^{\alpha})\]
 updated 4 days ago
 10 replies
 2 Medals
Mathematics

Loser66:
Group Title
Suppose f(x) is continuous on [a, b] except at a point in (a, b) at which f(x) has a jump discontinuity. For x in (a,b), set \(F(x) = \int _…
 updated 4 days ago
 2 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Converge or diverge?
\[\sum_{n=1}^\infty sin(n^{\infty})\]
Please, help
 updated 5 days ago
 1 reply
 No Medals Yet
Mathematics

Loser66:
Group Title
Converge or diverge?
\[\sum_{n=0}^\infty \dfrac{\sqrt{n+1}}{n^23n+1}\]
Please, help
 updated 5 days ago
 48 replies
 3 Medals
Mathematics

Loser66:
Group Title
Converge or diverge?
\[\sum_{k=0}^\infty \dfrac{\sqrt{n+1}}{n^23n+1}\]
please, help
 updated 5 days ago
 No Medals Yet
Mathematics

Loser66:
Group Title
Suppose \(f(x)\leq M\) for all \(x\in[a,b]\). For \(x\in[a,b]\) set \(F(x)=\int_a^x f(t)dt\). Show that F(x) is continuous on [a,b]
Pleas…
 updated 8 days ago
 24 replies
 2 Medals
Mathematics

Loser66:
Group Title
Please help
Prove nth root of 2 is irrational (n>= 2)
 updated 9 days ago
 2 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Question on comment
 updated 11 days ago
 19 replies
 1 Medal
Mathematics

Loser66:
Group Title
Question in comment
 updated 12 days ago
 54 replies
 2 Medals
Mathematics

Loser66:
Group Title
Consider [0, 1] =[0,1/n] union [1/n,1]
if \(\dfrac{1}{n}=x_0\)
\(\dfrac{1}{n}+\dfrac{1}{n^2}=x_1\)…
 updated 12 days ago
 4 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Evaluate
\[\int_A dxdy \] where A is a triangle in \(\mathbb R^2\) bounded by the line x =0, y=0, x+y=1
Please, help
 updated 13 days ago
 1 reply
 No Medals Yet
Mathematics

Loser66:
Group Title
Let \(f:\mathbb R^3\rightarrow \mathbb R\)
\(g(x,y,z)=f(x^2+yz,e^{yz}x,z^2y^2)\)
find \(\dfrac{\partial g}{\partial x},\dfrac{\partial g}{…
 updated 13 days ago
 2 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Someone explains me, please. Question on comment
 updated 14 days ago
 3 replies
 1 Medal
Mathematics

Loser66:
Group Title
Let \(f:[0,1]\rightarrow \mathbb R\) \(f(x) =1 if x =1/n\), n an integer, and f(x) =0 otherwise.
a) Prove that f is integrable
b) Show that …
 updated 16 days ago
 8 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Use Implicit Function theorem to show that \(F(x,y)= y^2+2xy +x1=0\) can be solved for y in terms of x near all points \((x_0,y_0)\) with \…
 updated 16 days ago
 42 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Riemann integrable functions
PLease, help
If \(f(x)\leq g(x)\forall x\in [a,b]\). There exist \(x_0\) such that \(f(x_0)<g(x_0)\)…
 updated 21 days ago
 1 reply
 No Medals Yet
Mathematics

Loser66:
Group Title
Find general formula for \(a_{n+2}=9a_{n+1}8a_n\) where \(a_0=1, a_1=8\)
Please, help
 updated 22 days ago
 12 replies
 1 Medal
Mathematics

Loser66:
Group Title
Someone explains me, please.
 updated 24 days ago
 8 replies
 3 Medals
Mathematics

Loser66:
Group Title
Explain me, please. I don't get why they said so.
x1 = 0.85779 . Is it not that x1 = 85779/100000 ? the same with others x2,x3,x4...
why d…
 updated 25 days ago
 20 replies
 2 Medals
Mathematics

Loser66:
Group Title
Prove: \(\dfrac{cos2A}{2}+1=\dfrac{cosA}{2}+\dfrac{1}{4}\)
Please, help
 updated 26 days ago
 5 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Please, help
Let \(\xi = e^{2\pi i/5}\)
a) find the minimal polynomials for \(cos (2\pi/5)~~and~~sin(2\pi/5)\) over \(\mathbb Q\)…
 updated 27 days ago
 11 replies
 2 Medals
Mathematics

Loser66:
Group Title
Lef f:[0,1] > R
f(x) = 1 if x =1/n , n is integer
f(x) =0 otherwise
…
 updated one month ago
 12 replies
 No Medals Yet
Mathematics

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