hartnn
 Name:

 School:
 About:
 There are some secret laws to become good in maths,
1) Practice,
2) More Practice,
3) More and more practice.
Need to know 4th ? ;)
188 helpers are online right now
75% of questions are answered within 5 minutes.

0 
Questions Asked

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 days 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 8 days ago
 23 replies
 6 Medals
Mathematics

hartnn:
Group Title
Show that
\( \Large (1e^{iθ} )^{(1/2)}+(1e^{(iθ)} )^{(1/2)}=(1+cosec(θ/2) )^{(1/2)} \)
 updated 9 days ago
 46 replies
 7 Medals
Mathematics

hartnn:
Group Title
show that
\(\Large \dfrac{ba}{\sqrt{1a^2}} < sin^{1}b  sin^{1}a < \dfrac{ba}{\sqrt{1b^2}}\)
 updated 9 days ago
 62 replies
 6 Medals
Mathematics

hartnn:
Group Title
if
\(\dfrac{(a+ib)^{x+iy}}{(aib)^{xiy}} = p+iq\)
…
 updated 9 days ago
 86 replies
 9 Medals
Mathematics

hartnn:
Group Title
If \(tan (\alpha +i\beta) = e^{i\theta}\)
find …
 updated 9 days ago
 45 replies
 7 Medals
Mathematics

hartnn:
Group Title
Forming Triple integral
z=0, z=1, x^2 +y^2 =4
 updated 23 days ago
 16 replies
 3 Medals
Mathematics

hartnn:
Group Title
Vector Calculus
Prove : (a is constant vector.)
\[\nabla \times [\dfrac{a\times \bar r}{r^n}] = \dfrac{2n}{r^n}a + \dfrac{n(a.\bar r)\ba…
 updated 23 days ago
 106 replies
 6 Medals
Mathematics

hartnn:
Group Title
Bilinear Transformation anyone ?
Find the image of the circle x^2+y^2=1,under the transformation w=(54z)/(4z2).…
 updated 29 days ago
 45 replies
 4 Medals
Mathematics

hartnn:
Group Title
Refreshing Differential Equations:
How do i solve …
 updated 29 days ago
 64 replies
 5 Medals
Mathematics

hartnn:
Group Title
Laplace Transform :
f(t) = a sin pt \(0<t\le \pi/p\)
f(t) = 0 \(\pi/p <t \le 2\pi/p \)
…
 updated one month ago
 22 replies
 3 Medals
Mathematics

hartnn:
Group Title
\(\Large \dfrac{π^4}{90}=\dfrac{1}{1^4} +\dfrac{1}{2^4} +\dfrac{1}{3^4} +\dfrac{1}{4^4} +⋯\)
 updated one month ago
 38 replies
 6 Medals
Mathematics

hartnn:
Group Title
Fourier integral representation.
Somewhere in my work, there is a sign error. Can anyone help me spot it ?
 updated one month ago
 2 replies
 1 Medal
Mathematics

hartnn:
Group Title
Fourier Series Expansion of sin x from (pi, pi)
 updated one month ago
 54 replies
 5 Medals
Mathematics

hartnn:
Group Title
Check my answers?
Also, can anyone work with me to find the line integral for question 6 c)
 updated one month ago
 67 replies
 4 Medals
Mathematics

hartnn:
Group Title
Verify my answer.
Bilinear Transformation.
…
 updated one month ago
 5 replies
 5 Medals
Mathematics

hartnn:
Group Title
Check my answer!
Find the analytic function f(z)=u+iv in terms of z if uv=(xy)(x^2+4xy+y^2 )
…
 updated one month ago
 3 replies
 2 Medals
Mathematics

hartnn:
Group Title
f(z)=(x^33xy^2+2xy)+ i(3x^2 yx^2+y^2y^3) is analytic, find \(f^' (z)\) & f(z) in terms of z
 updated one month ago
 50 replies
 4 Medals
Mathematics

hartnn:
Group Title
Verify my answer!
Green's Theorem anyone ?
 updated one month ago
 37 replies
 2 Medals
Mathematics

hartnn:
Group Title
Check my answer!
Using Laplace Transform.Solve the following differential equation with given
…
 updated one month ago
 16 replies
 2 Medals
Mathematics

hartnn:
Group Title
Find the analytic function f(z) = u+iv in terms of z if
uv = e^x (cos y  sin y)
 updated one month ago
 75 replies
 6 Medals
Mathematics

hartnn:
Group Title
Inverse Laplace transform of
\[\log(1+a^2/s^2 )\]
…
 updated one month ago
 16 replies
 3 Medals
Mathematics

hartnn:
Group Title
Check my answer! Complex form of Fourier series.
Complex form of Fourier Series for the functions f(x)=e^(ax ) in (0,a) …
 updated one month ago
 13 replies
 4 Medals
Mathematics

hartnn:
Group Title
Check my answer!
Laplace transform of
…
 updated one month ago
 22 replies
 7 Medals
Mathematics

hartnn:
Group Title
Check my answer!
integral from 0 to infinity e^(2t) sinht sin t/ t dt
…
 updated one month ago
 7 replies
 2 Medals
Mathematics

hartnn:
Group Title
Lets wish our dear friend and an awesome ambassador, @Jamierox4ev3r a very happy birthday!!
May you have the best birthday ever! :D
 updated 2 months ago
 11 replies
 6 Medals
Mathematics

hartnn:
Group Title
@gudden
 updated 3 months ago
 28 replies
 2 Medals
Mathematics

hartnn:
Group Title
Found these hilarious New year wishes on social media sites!
"I don't know who you are. I don't know what you want. But if you are reading …
 updated 6 months ago
 24 replies
 25 Medals
Mathematics

hartnn:
Group Title
2x^219x+24
@Laiken98
…
 updated 9 months ago
 21 replies
 2 Medals
Mathematics

hartnn:
Group Title
One of our user @RolyPoly has a suggestion.
Instead of posting "swapping answers is illegal" in different groups, why don't we just add a wa…
 updated 9 months ago
 21 replies
 12 Medals
Mathematics
 > Older questions