65,640 reputation
142126
bio website math.ethz.ch/~blatter
location Switzerland
age 79
visits member for 4 years, 2 months
seen 1 hour ago

Oct
2
revised Derivative as a linear transformation
added 22 characters in body
Oct
1
comment Is $(0,0)$ a local minima,local maxima or the saddle point?
@user84413: See my edit. Now nothing is "out of the blue".
Oct
1
revised Is $(0,0)$ a local minima,local maxima or the saddle point?
added 5 characters in body
Oct
1
answered Derivative as a linear transformation
Oct
1
answered How to prove that S = {$(x,y)| y > x^2$} is open?
Oct
1
answered Is $(0,0)$ a local minima,local maxima or the saddle point?
Oct
1
answered Why is $\sin(xy)/y$ continuous?
Sep
30
awarded  Explainer
Sep
30
comment Fundamental Theorem of Trigonometry
The sum of the angles is $180^\circ$.
Sep
30
answered Finding the fourier series of floor function
Sep
30
answered How do I verify the solution for this problem? (Advanced Calculus)
Sep
29
answered Line Integral with Arclength Parametrization
Sep
29
answered Smooth function proof
Sep
29
revised How to solve the trigonometric equation $\cos17x=20\cos x$?
added 34 characters in body
Sep
29
answered How to solve the trigonometric equation $\cos17x=20\cos x$?
Sep
29
revised How could I improve this approximation?
deleted 93 characters in body
Sep
29
comment Conceptual Understanding of Kernels
@DrewW: See my edit.
Sep
29
revised Conceptual Understanding of Kernels
added 445 characters in body
Sep
28
answered Conceptual Understanding of Kernels
Sep
28
answered What will happen after Laplace Transform?