hartnn
Name:
School:
About:
Indian :)
There are some secret laws to become good in maths,
1) Practice,
2) More Practice,
3) More and more practice.
Need to know 4th ? ;)
"Check out Featured Tutorial @ http://openstudytutorials.weebly.com"
0
Questions Asked
hartnn:
Group Title
What is this group about?? :)
updated yesterday
19 replies
2 Medals
Mathematics
hartnn:
Group Title
\(\Large [\dfrac{x}{y}] \)
`\Large [\dfrac{x}{y}]`
updated one month ago
17 replies
6 Medals
Mathematics
hartnn:
Group Title
Help John Decipher!
John ask God, to help him with his studies.
…
updated 2 months ago
108 replies
4 Medals
Mathematics
hartnn:
Group Title
Please welcome
@Kainui and @iambatman
to the team of Moderators! :D
updated 2 months ago
91 replies
31 Medals
Mathematics
hartnn:
Group Title
Expected behavior from normal users in case they find any breach of CoC by other user:
updated 2 months ago
43 replies
37 Medals
Mathematics
hartnn:
Group Title
Inverse Laplace Transform
of
(1/s) tanh^-1 (s)
…
updated 4 months ago
27 replies
3 Medals
Mathematics
hartnn:
Group Title
Green's Theorem Verification
Check My Solution, somewhere there is an error, I should either get both answer as 5/3 or both as -8/3
…
updated 4 months ago
90 replies
2 Medals
Mathematics
hartnn:
Group Title
Half-range sine series.
Check my work,
…
updated 4 months ago
14 replies
2 Medals
Mathematics
hartnn:
Group Title
\(u=e^{(x+y)}+\log (x^3+y^3-x^2 y-xy^2) \)
is this an homogeneous function ?
…
updated 5 months ago
161 replies
10 Medals
Mathematics
hartnn:
Group Title
Stuck on very last part of these 2 questions!
…
updated 5 months ago
46 replies
4 Medals
Mathematics
hartnn:
Group Title
Find the stationary values of sinx sin y sin (x+y).
To get stationary values, we solve f_x=0 and f_y=0 simultaneously.
…
updated 5 months ago
27 replies
4 Medals
Mathematics
hartnn:
Group Title
If ux+vy=a, u/x+v/y=1,show that
\[u/x (∂x/∂u)_v+v/y (∂y/∂v)_u=0\]
updated 5 months ago
5 replies
2 Medals
Mathematics
hartnn:
Group Title
not sure where am i going wrong here...
…
updated 5 months ago
24 replies
8 Medals
Mathematics
hartnn:
Group Title
Expand x/(e^x-1) in powers of x.
looking for alternate methods,…
updated 5 months ago
39 replies
7 Medals
Mathematics
hartnn:
Group Title
Ifx+y=2e^θ cos ϕ,x-y=2ie^θ sin ϕ,& u is the function of x & y,then prove that
(∂^2 u)/(∂θ^2 )+(∂^2 u)/(∂ϕ^2 ) =4xy (∂^2 u)/∂x∂y
…
updated 5 months ago
52 replies
4 Medals
Mathematics
hartnn:
Group Title
If x=cos θ-r sin θ,y=sin θ+r cos θ
prove that dr/dx =x/r
…
updated 5 months ago
28 replies
4 Medals
Mathematics
hartnn:
Group Title
Find the inverse Z-Transform of -
f(z)=(z+2)/(z^2-2z+1) ,|z|>1
…
updated 5 months ago
38 replies
4 Medals
Mathematics
hartnn:
Group Title
If f(k)=4^k U(k)and g(k)=5^k U(k),
then find the z-transform of f(k).g(k)
…
updated 5 months ago
5 replies
3 Medals
Mathematics
hartnn:
Group Title
Check my answer!
laplace Transform to solve Integro-Differential Equation.
…
updated 5 months ago
1 reply
1 Medal
Mathematics
hartnn:
Group Title
Prove that f_1 (x)=1,f_2 (x)=x,f_3 (x)=((3x^2-1))/2 are orthogonal over (-1,1)
I know the method, Just need a start
…
updated 5 months ago
19 replies
3 Medals
Mathematics
hartnn:
Group Title
Verify Laplace equation for U=(r+a^2/r) cos θ .Also find V and f(z)
I could verify,
…
updated 5 months ago
9 replies
2 Medals
Mathematics
hartnn:
Group Title
Can Milne-Thompson Method be used to find the Real part of f(z) when Imaginary part is given ??
updated 5 months ago
17 replies
5 Medals
Mathematics
hartnn:
Group Title
If cos(x+iy) cos(u+iv)=1,where x,y,u,v are real then show that tanh^2y cosh^2v=sin^2u
updated 6 months ago
45 replies
5 Medals
Mathematics
hartnn:
Group Title
If a+ib=tanh(x+i π/4),prove that a^2+b^2=1
…
updated 6 months ago
19 replies
3 Medals
Mathematics
hartnn:
Group Title
Unitary Matrix Problem, Not sure about my work, can anyone verify it or suggest an alternative approach by trying independently ?
updated 7 months ago
26 replies
4 Medals
Mathematics
hartnn:
Group Title
2 easy questions
1) what does this notation mean ??
\(\Large (\dfrac{\partial u}{\partial x})_y \)
…
updated 7 months ago
23 replies
6 Medals
Mathematics
hartnn:
Group Title
Show that
\( \Large (1-e^{iθ} )^{(-1/2)}+(1-e^{(-iθ)} )^{(-1/2)}=(1+cosec(θ/2) )^{(1/2)} \)
updated 7 months ago
46 replies
8 Medals
Mathematics
hartnn:
Group Title
show that
\(\Large \dfrac{b-a}{\sqrt{1-a^2}} < sin^{-1}b - sin^{-1}a < \dfrac{b-a}{\sqrt{1-b^2}}\)
updated 7 months ago
62 replies
7 Medals
Mathematics
hartnn:
Group Title
if
\(\dfrac{(a+ib)^{x+iy}}{(a-ib)^{x-iy}} = p+iq\)
…
updated 7 months ago
86 replies
10 Medals
Mathematics
hartnn:
Group Title
If \(tan (\alpha +i\beta) = e^{i\theta}\)
find …
updated 7 months ago
45 replies
8 Medals
Mathematics
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