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Mar
13
answered If $\lim_{x\to 0}\frac{\cos^2x-\cos x-e^x\cos x+e^x-\frac{x^3}{2}}{x^n}$ is a non zero finite number number, find $n$ where $n\in\mathbb{N}$
Feb
22
awarded  Excavator
Feb
22
comment Why does a radial basis function kernel imply an infinite dimension map?
stats.stackexchange.com/a/58607/10823
Feb
22
revised Why does a radial basis function kernel imply an infinite dimension map?
Fixed latex, fixed incorrect notation usage and added missing details
Feb
2
comment Show that $\frac{1}{1+k}=\frac{\frac{1}{k}}{1+\frac{1}{k}}\leq \ln(1+\frac{1}{k})\leq\frac{1}{k}$
@JellyBelly math.stackexchange.com/questions/504663/…
Feb
2
revised Show that $\frac{1}{1+k}=\frac{\frac{1}{k}}{1+\frac{1}{k}}\leq \ln(1+\frac{1}{k})\leq\frac{1}{k}$
added 36 characters in body
Feb
1
answered Show that $\frac{1}{1+k}=\frac{\frac{1}{k}}{1+\frac{1}{k}}\leq \ln(1+\frac{1}{k})\leq\frac{1}{k}$
Jan
27
comment Derivative of trace of matrix product
cal.cs.illinois.edu/~johannes/research/matrix%20calculus.pdf
Jan
23
answered Finding $\sum_{k=1}^{\infty}k^2 \frac{2^{k-1}}{3^k}$
Jan
20
comment Solving SVM classifier with two weight vectors
@user2204324 Updated based on your recent edits.
Jan
20
revised Solving SVM classifier with two weight vectors
added 597 characters in body
Jan
20
comment Solving SVM classifier with two weight vectors
@user2204324 just updated the constraints as well.
Jan
20
revised Solving SVM classifier with two weight vectors
added 243 characters in body
Jan
20
answered Solving SVM classifier with two weight vectors
Jan
13
comment Prove that $\int_{2}^{\infty} \frac{dx}{x^{1-\epsilon}\cdot \ln(x)^{\beta}}$ diverges for every $\beta$.
Put $\ln x = y$. Should make your analysis easier.
Jan
13
comment Mutual Information Always Non-negative
@becko The same arguments hold, you just have to replace the summations by integrals.
Jan
11
answered How to prove $\cos \theta + \sin \theta =\sqrt{2} \cos\theta$.
Dec
16
awarded  Tenacious
Nov
21
comment Prove that Pb(x) = x / $||$x$||$ if $||$x$||$ $\gt$ 1 or x if $||$x$||$ $\leq$ 1.
Hint: Think of 2D space. Draw the norm ball, which is essentially a circle at the center in 2D. Take any point x in the plane. If you draw a line from the center to that point x, then this line will intersect with the exterior of the norm ball, what is that point?
Nov
8
awarded  Nice Answer