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hasanghaforian
  • Member for 12 years, 3 months
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7 votes
3 answers
315 views

Evaluate $\lim\limits_{x\to 0} \frac{x(1-\cos x)}{x - \sin(x)}$ without Taylor series or L'Hôpital's rule?

4 votes
0 answers
45 views

What is incorrect in my way for getting Fourier transform of step function?

3 votes
1 answer
78 views

name of uniformly convergence $f_n \to f$ when $|f_{n}(x) - f(x)|$ decreases monotonically

3 votes
3 answers
1k views

What is the meaning of "prove by example"? [closed]

2 votes
0 answers
39 views

Simplifying $\sum_{k=1}^{\log_{2}{n}}\log_{3}{\frac{n}{2^k}}$ in two ways gives different results

2 votes
2 answers
5k views

linear transformation and angles?

2 votes
1 answer
135 views

Relation between range of $\sin(\pi x)$ and $\sin(b^n \pi x)$ on a monotonic region when $|b| > 1$

2 votes
3 answers
2k views

What is the type of "A implies B"?

1 vote
1 answer
98 views

derivative of a function with respect to matrix

1 vote
1 answer
121 views

Equality of fuzzy sets

1 vote
1 answer
140 views

Interpretation of "If A, then B" as "A coupled with B": Context and Applicability

1 vote
0 answers
1k views

Sequence of Euler (yaw/pitch/roll) rotations?

1 vote
2 answers
102 views

A simple inequality in calculus?

1 vote
0 answers
1k views

Geometric representation for Cartesian products of two line segments

0 votes
2 answers
115 views

Are terms like "2D point", "3D line" legal?

0 votes
1 answer
58 views

Why is considering $\delta(\mu)$ as Fourier transform for $f(t) = 1$ rational?

0 votes
1 answer
37 views

Idea behind displaying probability mass functions by impulses

0 votes
1 answer
190 views

A simple inequality in about integer part of numbers?

0 votes
1 answer
368 views

A vision for deep learning of Calculus [closed]

0 votes
0 answers
41 views

When does $|\hat{f}(n)|$ decrease to $0$ monotonically; while $\hat{f}(n)$s are Fourier coefficients of $f$?

0 votes
1 answer
146 views

Prove $\sum\limits_{0}^{\infty}(ab)^n\pi\sin(b^n\pi x)$ diverges if $|ab| > 1+\frac{3}{2}\pi$ and $|a|<1$