User Ranjan Yajurvedi - Mathematics Stack Exchange

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	28 reputation	bio	website		visits	member for	8 months
5 badges		location	Hyderabad, India.		seen	May 15 at 5:13

103

206

votes

33

answers

17

kviews

Do complex numbers really exist?

may 5 at 4:54 l19 115

108

179

votes

8

answers

15

kviews

Is $dy/dx$ not a ratio?

calculus

mar 14 at 3:35 isomorphismes 845

54

151

votes

13

answers

17

kviews

Unusual 5th grade problem, how to solve it

elementary-number-theory diophantine-equations

may 1 at 13:18 doraemonpaul 3,026

77

115

votes

28

answers

8

kviews

A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language

soft-question big-list examples-counterexamples

aug 6 at 1:40 John 1

51

55

votes

25

answers

5

kviews

What is the single most influential book every mathematician should read?

soft-question big-list reference-request

aug 5 at 21:53 sam boosalis 1

12

46

votes

8

answers

2

kviews

Different kinds of infinities?

set-theory intuition

apr 28 at 7:14 julian fernandez 2,029

19

45

votes

3

answers

11

kviews

What is the practical difference between a differential and a derivative?

calculus

mar 6 at 20:48 user65397 1

13

45

votes

13

answers

3

kviews

Why is the volume of a sphere $\frac{4}{3}\pi r^3$?

geometry

feb 24 at 4:00 Isaac 21.1k

11

43

votes

7

answers

1

kviews

What's so “natural” about the base of natural logarithms?

calculus logarithms

dec 23 at 5:19 hesson 403

45

40

votes

20

answers

2

kviews

Your favourite maths puzzles

soft-question big-list puzzle

aug 23 at 13:52 Mad Scientist 129

10

35

votes

6

answers

1

kviews

Why does the series $\frac 1 1 + \frac 12 + \frac 13 + \cdots$ not converge?

calculus sequences-and-series faq

mar 15 at 20:15 Dominic Michaelis 11.9k

12

34

votes

4

answers

2

kviews

Is there any branch of Mathematics which has no applications in any other field or in real world?

soft-question math-history

mar 16 at 22:42 Andres Caicedo 24.4k

6

28

votes

6

answers

2

kviews

What is the larger of the two numbers?

algebra-precalculus inequality

jul 22 at 10:54 J. M. 38.9k

6

28

votes

13

answers

2

kviews

What exactly is infinity?

definition infinity

may 16 at 16:55 Cole Johnson 325

5

25

votes

7

answers

8

kviews

Why is the volume of a cone one third of the volume of a cylinder?

geometry

jan 16 at 6:32 Hagen von Eitzen 42.7k

9

25

votes

6

answers

5

kviews

Why is the derivative of a circle's area its perimeter (and similarly for spheres)?

geometry calculus

apr 8 '12 at 20:52 Beni Bogosel 10.5k

4

25

votes

7

answers

1

kviews

Where are the values of the sine function coming from?

trigonometry

feb 24 at 17:04 Gustavo Bandeira 2,403

11

24

votes

14

answers

2

kviews

How do I understand $e^i$ which is so common?

complex-numbers exponentiation

feb 20 at 7:28 boywholived 719

14

23

votes

5

answers

1

kviews

Limits: How to evaluate $\lim\limits_{x\rightarrow \infty}\sqrt[n]{x^{n}+a_{n-1}x^{n-1}+\cdots+a_{0}}-x$

calculus limit faq

aug 29 '11 at 18:55 J. M. 38.9k

12

23

votes

7

answers

14

kviews

Is there a general formula for solving 4th degree equations?

algebra-precalculus polynomials

nov 3 at 3:25 Cameron Buie 27.6k

8

21

votes

8

answers

2

kviews

What's the precise meaning of imaginary number?

complex-numbers

sep 20 at 16:11 Holdsworth88 3,465

10

20

votes

3

answers

2

kviews

How do people apply the Lebesgue integration theory?

real-analysis measure-theory integration soft-question

apr 5 at 16:28 Jack 7,521

8

18

votes

3

answers

1

kviews

Find the limit $\lim \limits_{n\to \infty }\cos \left(\pi\sqrt{n^{2}-n} \right)$

calculus limit

jun 20 '12 at 15:43 Chris's wise sister 11.5k

13

17

votes

14

answers

3

kviews

Intuitive understanding of the derivatives of $\sin x$ and $\cos x$

calculus trigonometry

aug 16 at 22:37 Peter Tamaroff 25.9k

4

17

votes

3

answers

813

views

Why does area differentiate to perimeter for circles and not for squares?

geometry calculus

may 9 at 10:26 jkn 1,500

19

17

votes

3

answers

7

kviews

Why is the area under a curve the integral?

calculus integral intuition

feb 24 at 20:02 Jacob Mayle 656

12

17

votes

9

answers

3

kviews

Do infinity and zero really exist?

elementary-number-theory elementary-set-theory infinity

jun 17 '12 at 13:16 Hurkyl 21.5k

3

16

votes

7

answers

1

kviews

Explanation of method for showing that 0 / 0 is undefined

algebra-precalculus

aug 18 '11 at 9:57 badp 542

7

15

votes

5

answers

524

views

How does the wheel paradox work?

geometry

sep 12 at 2:04 Vassilis Parassidis 47

5

13

votes

3

answers

344

views

Can this integral $\int_0^{2\pi} \frac{d\theta}{(a^2 \cos^2 \theta +b^2\sin^2\theta)^{3/2}}$ be written in the form of a elliptic integral

integral special-functions elliptic-integrals

jul 13 at 14:47 J. M. 38.9k

Ranjan Yajurvedi

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