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• Yesterday, 05:12 PM
Of the integers 1 to 96 one-half are even. If n is even then n=2j ....
19 replies | 248 view(s)
• Yesterday, 12:05 AM
In Japan by grade six, students have a strong base in simple algebra.
16 replies | 311 view(s)
• 12-17-2018, 11:59 PM
As an old testing guy this question really puzzles me. Even having worked with the GRE this just does not seem usual unless it was a time waster. Oh...
19 replies | 248 view(s)
• 12-17-2018, 11:17 PM
@Vancouverron, I wish you had posted your result. I think the the solution is really simple. Suppose that \bf{\mathcal{s}} is the length of the...
16 replies | 311 view(s)
• 12-16-2018, 10:22 PM
If the question is D_x\left then all I can say if that is too advanced question for a beginner. First of all the question requires logarithmic...
4 replies | 122 view(s)
• 12-16-2018, 02:34 PM
You might find THIS useful.
5 replies | 179 view(s)
• 12-15-2018, 10:26 PM
Let's rewrite f(x)=-5(2x+1)(x-2)^2(x-6) If x\in(-\infty,-0.5)\cup(6,\infty) then f(x)<0. Is that correct? Now if x\in(-0.5,6) then f(x)\ge 0, do...
2 replies | 134 view(s)
• 12-14-2018, 10:46 PM
Have a look HERE/
2 replies | 132 view(s)
• 12-14-2018, 10:28 PM
O.K. fair enough smart-guy, what is your question then?
19 replies | 479 view(s)
• 12-14-2018, 09:20 PM
3^2\cdot 5^2=9\cdot 25=225 You have problems with simple arithmetic of fractions. \large \sqrt{3^2\cdot 5^2}=\left(3^2\cdot...
19 replies | 479 view(s)
• 12-14-2018, 03:34 PM
Dan, that is inscrutable story. I have great familiarity with UNC. UNC along with UVA are considered the two southern "Public-Ivys". Please tell me...
16 replies | 414 view(s)
• 12-14-2018, 03:19 PM
Now find C_1~\&~C_2 -8=F(4)=\dfrac{4^3}{3}+C_2 so that -8=\dfrac{64}{3}+C_2 or C_2=-\dfrac{88}{3} \mathop {\lim }\limits_{x \to {1^ - }} \left(...
13 replies | 351 view(s)
• 12-14-2018, 01:44 AM
If I were doing this, I would factor 225~\&~81. 225=3^2\cdot 5^2~\&~81=3^4 \begin{align*}\sqrt{\dfrac{225}{81}}&=\sqrt{\dfrac{3^2\cdot...
19 replies | 479 view(s)
• 12-13-2018, 03:59 PM
Although you have been asked to so work, having spent over an hour trying to get that answer I became convinced it was incorrect even though...
3 replies | 182 view(s)
• 12-11-2018, 01:44 PM
The above reply begs the question: do you understand the operations with fractions? \dfrac{A}{B}-C=\dfrac{A-BC}{B}...
15 replies | 429 view(s)
• 12-11-2018, 01:08 PM
\begin{align*}\dfrac{4\sqrt{3}}{\sqrt{3}}-2&=\dfrac{4-2\sqrt{3}}{\sqrt{3}}\\&=\dfrac{4-2\sqrt{3}}{\sqrt{3}}\left(\dfrac{\sqrt3}{\sqrt{3}}\right)\\&=...
15 replies | 429 view(s)
• 12-11-2018, 11:36 AM
To wolly, you were repeatedly asked to supply the exact wording of the question. Had you done, this thread could have shorten considerably, Asking...
15 replies | 515 view(s)
• 12-10-2018, 05:07 PM
You have been asked to post the exact wording. So this a guess. Have you been asked to find the value of the derivative of the inverse function at...
15 replies | 515 view(s)
• 12-09-2018, 10:07 PM
Functions and Graphs by Earl Swokowski is one of the best advanced college algebra ever written. There are some very good used copies available...
21 replies | 565 view(s)
• 12-09-2018, 01:23 PM
@Tadams, for self-studying you did a good job translating the statement into symbolic form. As you do more of these I suggest that if you have an...
5 replies | 385 view(s)
• 12-09-2018, 11:59 AM
You posted this question in the Pre-Algebra Forum. But I see no way to solve it without using trigonometry functions. Do you know how to work with...
2 replies | 282 view(s)
• 12-09-2018, 10:10 AM
Well I don't think I would have marked it completely wrong, but is is extremely confusing to read. Say if simply: The set S=\{v_1,v_2,v_3....v_k\}...
5 replies | 211 view(s)
• 12-08-2018, 10:01 PM
You know don't you that no one here angrily exclaimed anything to you. You seem to be projecting an attitude that is simply not there. So read this...
25 replies | 886 view(s)
• 12-08-2018, 11:10 AM
@Phavonic, I think we all here understand your frustration at this question. Frankly I am totally confused by it and taught mathematics for fifty...
25 replies | 886 view(s)
• 12-07-2018, 09:59 PM
Is your given task to solve 2x^2-4x+1=0~?. If it is then what does the other function have to do with that task? It seems that this is a simple...
25 replies | 886 view(s)
• 12-06-2018, 11:32 PM
I agree with tkh that dx is totally irrelevant. This is a poor question, it is a bad 'grouping' question. \int {\left} = \int {fg} + 4\int h -...
7 replies | 387 view(s)
• 12-06-2018, 02:54 PM
I find this to be a rather odd discussion. That is because the trapezoid seems to be the odd figure out. Although the trapezoid is a quadrilateral...
13 replies | 714 view(s)
• 12-06-2018, 01:51 AM
Suppose that N_1~\&~N_2 choices then if \{N_1,N_2\}\subset then N_1+N_2\ge1 and \mathcal{P}(N_1,N_2)=.25. BUT if \{N_1,N_2\}\subset then N_1+N_2<1,...
13 replies | 716 view(s)
• 12-05-2018, 11:43 PM
Each of the three numbers is prime & one is even. Thus the selection is \{2,3,5\},~\{2,3,7\},\text{ or }\{2,5,7\} 7-3=4,\text{ or }7-5=2
5 replies | 428 view(s)
• 12-04-2018, 08:15 PM
I am a strong proponent of using the general form of the line: Ax+By+C=0 Using that equation we can see at once the slope: \dfrac{-A}{B},~B\ne 0....
7 replies | 360 view(s)
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#### Basic Information

Biography:
Retired university mathematics professor & division chair.

#### Signature

“A professor is someone who talks in someone else’s sleep”
W.H. Auden

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##### General Information
Last Activity
Yesterday 11:44 PM
Join Date
01-29-2005
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