User Sasaki

48 votes

6 answers

5k views

A question about differentiating equations that are impossible to solve for a variable

asked Mar 1, 2017 at 20:15

9 votes

2 answers

10k views

The probability of forming Mississippi by choosing random letters from Mississippi

asked Dec 10, 2017 at 22:32

8 votes

5 answers

285 views

A doubt on a proof of $\lim \frac{\sin x}{x}$ as $x\to 0$ provided in Simmons's Calculus with Analytic Geometry

asked Feb 15, 2017 at 16:11

4 votes

6 answers

435 views

Doubt on a proof that $\lim_{x\rightarrow0}{\frac{\sin{x}}{x}}=1$

asked Jan 13, 2018 at 1:36

4 votes

2 answers

386 views

Finding the surface area of a "slanted" solid

asked Mar 15, 2018 at 17:39

3 votes

4 answers

321 views

Why doesn't this integral yield the area of the sphere? [duplicate]

asked Mar 26, 2018 at 23:18

3 votes

5 answers

444 views

Given one side and the opposite angle, how to show the area is a maximum when the triangle is isosceles?

asked Jan 9, 2018 at 17:54

3 votes

1 answer

1k views

Proof that the area of a region in the plane is unchanged under shearing transformations

asked Mar 9, 2018 at 20:30

3 votes

1 answer

59 views

Is my proof for this claim acceptable? (if f is continuous, than f is sequentially continuous)

asked Feb 7, 2017 at 13:33

3 votes

3 answers

814 views

Is there a simple way to prove that a continuous function in [a,b] has least upper bound?

asked Feb 7, 2017 at 23:51

3 votes

1 answer

109 views

How to show that $\frac{dy}{dx}=\frac{dy}{d(x-c)}$?

asked Dec 12, 2017 at 22:33

3 votes

1 answer

83 views

Problem involving directly and inversely proportional division

asked Aug 13, 2018 at 23:19

2 votes

3 answers

2k views

What is the probability that this quadratic equation has real roots?

asked Dec 11, 2017 at 0:33

2 votes

1 answer

47 views

Quick doubt on an application of the chain rule

asked Dec 11, 2017 at 22:47

2 votes

4 answers

281 views

Quick doubt about multiplying vectors by scalars

asked Dec 4, 2017 at 23:57

1 vote

2 answers

499 views

Quick question on a probability problem

asked Jan 1, 2018 at 0:22

1 vote

3 answers

97 views

Help with a simple trigonometry problem

asked Jan 2, 2018 at 19:28

1 vote

1 answer

262 views

Area of an arbitrary region under dilation

asked Jan 4, 2018 at 17:53

1 vote

1 answer

50 views

Shortest path from $A$ to $L_1$ to $L_2$ to $B$

asked Apr 5, 2018 at 1:57

1 vote

6 answers

1k views

How to show that the volume of a cone with an arbitrary base is $(1/3)Bh$?

asked Mar 19, 2018 at 21:11

0 votes

1 answer

20 views

Doubt in a step of a Geometry proof

asked Apr 12, 2018 at 2:56

0 votes

1 answer

39 views

Help understanding a solution for a Calculus problem involving Trigonometry

asked Jan 15, 2018 at 16:57

0 votes

1 answer

1k views

Does the line connecting the centers of two externally tangent circles contain the point of tangency?

asked Feb 1, 2018 at 19:21

0 votes

0 answers

861 views

Help finding the perimeter of a circumscribed hexagon

asked Feb 2, 2018 at 17:43

0 votes

1 answer

72 views

How to show that mean and median are the same if the distribution is symmetrical

asked Feb 6, 2018 at 16:04

0 votes

2 answers

52 views

Simple doubt on a linear algebra proof involving inequalities

asked Feb 19, 2018 at 15:02

0 votes

1 answer

1k views

A problem involving similar triangles

asked Feb 21, 2018 at 15:49

0 votes

2 answers

171 views

If $\bar{AD}=r\bar{AB}$ and $\bar{AE}=r\bar{AC}$, is $\bar{DE}\parallel\bar{BC}$?

asked Feb 23, 2018 at 18:52

0 votes

4 answers

78 views

Doubt on a Trigonometry proof

asked Jan 1, 2018 at 19:12

0 votes

2 answers

41 views

What am I doing wrong with this simple integration problem?

asked Dec 20, 2017 at 12:48

Stack Exchange Network

36 Questions

A question about differentiating equations that are impossible to solve for a variable

The probability of forming Mississippi by choosing random letters from Mississippi

A doubt on a proof of $\lim \frac{\sin x}{x}$ as $x\to 0$ provided in Simmons's Calculus with Analytic Geometry

Doubt on a proof that $\lim_{x\rightarrow0}{\frac{\sin{x}}{x}}=1$

Finding the surface area of a "slanted" solid

Why doesn't this integral yield the area of the sphere? [duplicate]

Given one side and the opposite angle, how to show the area is a maximum when the triangle is isosceles?

Proof that the area of a region in the plane is unchanged under shearing transformations

Is my proof for this claim acceptable? (if f is continuous, than f is sequentially continuous)

Is there a simple way to prove that a continuous function in [a,b] has least upper bound?

How to show that $\frac{dy}{dx}=\frac{dy}{d(x-c)}$?

Problem involving directly and inversely proportional division

What is the probability that this quadratic equation has real roots?

Quick doubt on an application of the chain rule

Quick doubt about multiplying vectors by scalars

Quick question on a probability problem

Help with a simple trigonometry problem

Area of an arbitrary region under dilation

Shortest path from $A$ to $L_1$ to $L_2$ to $B$

How to show that the volume of a cone with an arbitrary base is $(1/3)Bh$?

Doubt in a step of a Geometry proof

Help understanding a solution for a Calculus problem involving Trigonometry

Does the line connecting the centers of two externally tangent circles contain the point of tangency?

Help finding the perimeter of a circumscribed hexagon

How to show that mean and median are the same if the distribution is symmetrical

Simple doubt on a linear algebra proof involving inequalities

A problem involving similar triangles

If $\bar{AD}=r\bar{AB}$ and $\bar{AE}=r\bar{AC}$, is $\bar{DE}\parallel\bar{BC}$?

Doubt on a Trigonometry proof

What am I doing wrong with this simple integration problem?