View Profile: MarkFL - Math Help Boards

Yesterday, 23:49

MarkFL replied to a thread Find 2 Numbers in Pre-Calculus

Yes, that's correct. (Yes)

2 replies | 17 view(s)

Yesterday, 23:29

MarkFL replied to a thread Students Fear Word Problems in Chat Room

If I had to point my finger in any one direction, it would be at parents.

11 replies | 112 view(s)

Yesterday, 21:33

MarkFL replied to a thread 15.1.25 Evaluate the following double integral over the region R in Calculus

The region $R$ is a rectangle having the vertices: (0,1),\,(1,1),\,(1,-1),\,(0,-1) One way we can compute the volume is: ...

4 replies | 54 view(s)

Yesterday, 19:41

MarkFL replied to a thread logs in Pre-Algebra and Algebra

Okay, we are given: \ln\left(x-\frac{1}{x}-3\right)=2 Converting from logarithmic to exponential form, we have: x-\frac{1}{x}-3=e^2 ...

2 replies | 23 view(s)

Yesterday, 15:26

MarkFL replied to a thread 15.1.25 Evaluate the following double integral over the region R in Calculus

As for the $\LaTeX$, look under the "Calculus/Analysis" section of our Quick $\LaTeX$ tool. You will find it, which gives the code: ...

4 replies | 54 view(s)

Yesterday, 10:48

MarkFL replied to a thread The Fonz and Geometry in Chat Room

Yes, and I was just pointing out that there can be other reasons a student fails besides lack of innate ability to understand the material, or an...

5 replies | 65 view(s)

Yesterday, 10:18

MarkFL replied to a thread The Fonz and Geometry in Chat Room

If a child's parents consistently put a child down, then I think this can have negative consequences on the child. I think there are a great many...

5 replies | 65 view(s)

August 22nd, 2017, 23:08

MarkFL replied to a thread Students Fear Word Problems in Chat Room

I disagree with this...I think it is the societal attitude that it's okay to fail at math that is part of the problem. Someone says to their friends,...

11 replies | 112 view(s)

August 22nd, 2017, 22:23

MarkFL replied to a thread Probability of 3 people ending up on same team? in Basic Probability and Statistics

If we have 2000 people, 300 of which are women, then the probability that all 300 women will be on the same team is given by: P(A)=\frac{{1700...

5 replies | 52 view(s)

August 22nd, 2017, 22:01

MarkFL replied to a thread Probability of 3 people ending up on same team? in Basic Probability and Statistics

I think your second method is correct. Suppose we call the teams $X$ and $Y$...and now we need only look at one team, so let's look at team $X$. If...

5 replies | 52 view(s)

August 22nd, 2017, 19:04

MarkFL replied to a thread Solar Eclipse 2017 in Chat Room

Yesterday during the big event, we had pervasive heavy cloud cover and intermittent rain. Today, sunny and clear all day. Story of my life...(Giggle)

8 replies | 234 view(s)

August 20th, 2017, 01:29

MarkFL posted a visitor message on Peter's profile

Hey Peter! (Wave) I edited your post to remove the duplicate content. Sorry for the late reply, I was busy "powering through" a tedious 3 hour...

August 17th, 2017, 02:10

MarkFL replied to a thread 231.12.3.65 Determine the smallest distance between a point and a line in Calculus

Small quibble...axis of symmetry is: t=-\frac{1}{105} So, since the parabola opens up, the vertex is a minimum, so the minimum distance will be...

8 replies | 177 view(s)

August 17th, 2017, 00:59

MarkFL replied to a thread 231.12.3.65 Determine the smallest distance between a point and a line in Calculus

For a parabola of the form: f(x)=ax^2+bx+c We know the axis of symmetry is at: x=-\frac{b}{2a} So, for:

8 replies | 177 view(s)

August 16th, 2017, 22:42

MarkFL started a thread Welcome Threads in vBulletin Products

Overview: This product is designed to auto-post a welcome thread for all new users once they have completed all verifications, and/or returning...

0 replies | 29 view(s)

August 16th, 2017, 21:58

MarkFL replied to a thread 231.12.3.63 Determine the smallest distance between point and line in Calculus

Isn't this question a duplicate of the following? 231.12.3.65 Determine the smallest distance between a point and a line

1 replies | 45 view(s)

August 14th, 2017, 01:09

MarkFL replied to a thread Solar Eclipse 2017 in Chat Room

I was just reading about how tree leaves can form "pinhole cameras" and the eclipse can be seen in their shadows:

8 replies | 234 view(s)

August 13th, 2017, 14:03

MarkFL replied to a thread [SOLVED] 12 DeMoivre's theorem in Trigonometry

In case you're wondering how I obtained the following factorizations: 1+3i=(1+i)(2+i) 2-2i=-(1+i)^3 What I did for the first was to write: ...

13 replies | 275 view(s)

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August 24th, 2017

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We are an online community that gives free mathematics help any time of the day about any problem, no matter what the level. You will have to register before you can post. To start viewing messages, select the forum that you want to visit from the selection below.

MarkFL Pessimist Singularitarian MHB AdministratorMHB CoderMHB Math HelperMHB Ambassador

Mini Statistics

Statistics

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August 24th, 2017

August 23rd, 2017

MarkFL

Pessimist Singularitarian

MHB Administrator
MHB Coder
MHB Math Helper
MHB Ambassador