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tkhunny
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tkhunny
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Join Date
04-12-2005
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Yesterday
08:33 PM
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Yesterday,
03:19 PM
tkhunny
replied to a thread
how many solutions are there for the equation sinxcosx = 1/6
in
Geometry and Trig
Why did you delete your useful response? We wouldn't know how to help you without that.
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5 replies | 97 view(s)
Yesterday,
11:20 AM
tkhunny
replied to a thread
how many solutions are there for the equation sinxcosx = 1/6
in
Geometry and Trig
Have you considered the suggested transformation? \sin(2x) = 2\sin(x)\cos(x) Very useful.
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5 replies | 97 view(s)
Yesterday,
06:56 AM
tkhunny
replied to a thread
Infinite sum help
in
Intermediate/Advanced Algebra
Do you recognize the KIND of series this is? It's famous! Once you recognize it, the sum is well known.
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4 replies | 88 view(s)
Yesterday,
06:55 AM
tkhunny
replied to a thread
One-sided limit
in
Calculus
You're oh so close. sin(pi-) > 0 sin(pi+) < 0 Chew on that.
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2 replies | 50 view(s)
09-21-2017,
07:46 PM
tkhunny
replied to a thread
Can someone help me with this Statitics problem? (attached)
in
Probability / Statistics
Well, here's the deal. This is a fundamental problem type that you MUST understand. Please check out the "Read Before Posting" and give it another...
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1 replies | 78 view(s)
09-21-2017,
05:48 PM
tkhunny
replied to a thread
find the range of these functions algebraically: y =x^3 + 2x^2 - 5x + 2 and...
in
Intermediate/Advanced Algebra
And how does this help? You still have to track it down in just the same way.
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9 replies | 244 view(s)
09-21-2017,
05:46 PM
tkhunny
replied to a thread
Calculus 1 - Problem
in
Intermediate/Advanced Algebra
Fair enough. Suffice it to say that there is some variation out there. Read your text carefully and be sure you know what it mean when it says...
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8 replies | 197 view(s)
09-21-2017,
05:44 PM
tkhunny
replied to a thread
Binomial distribution question about defective light bulbs
in
Probability / Statistics
Did you solve the problem manually, just to prove that your calculator button-pushing didn't skip anything? You could also build a quick...
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2 replies | 86 view(s)
09-21-2017,
09:19 AM
tkhunny
replied to a thread
Trigonometry and forces
in
Geometry and Trig
Well, this isn't really a consulting service, but if you do your best to show your knowledge of Statics, demonstrating your best arithmetic, we would...
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1 replies | 56 view(s)
09-21-2017,
06:09 AM
tkhunny
replied to a thread
Advanced Volume of Irregular object
in
Calculus
You should apply the natural formula to every region necessary. Let's see your work. Keep in mind that one integration direction, either dy or...
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2 replies | 97 view(s)
09-21-2017,
06:05 AM
tkhunny
replied to a thread
Problem from Do Carmo
in
Geometry and Trig
What say you? Your views and impressions are required.
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1 replies | 47 view(s)
09-21-2017,
06:04 AM
tkhunny
replied to a thread
Help with probability density function
in
Probability / Statistics
Have you considered testing for a valid probability density? Maybe an integral to see that it adds up to Unity? You may find restrictions along the...
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1 replies | 58 view(s)
09-21-2017,
06:03 AM
tkhunny
replied to a thread
Calculus 1 - Problem
in
Intermediate/Advanced Algebra
I'm a little nervous about log(x) in this problem. In a calculus course, "log(x)" normally means Base e. Thus, it is difficult to pronounce...
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8 replies | 197 view(s)
09-20-2017,
09:28 PM
tkhunny
replied to a thread
Calculate f(-1)
in
Intermediate/Advanced Algebra
Good call. Come back, any time.
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5 replies | 130 view(s)
09-20-2017,
07:02 PM
tkhunny
replied to a thread
Calculate f(-1)
in
Intermediate/Advanced Algebra
No, that doesn't help. You demonstrated in your edited post that you DO have an idea where to start. Now, move on to the next hint and do the...
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5 replies | 130 view(s)
09-20-2017,
05:36 PM
tkhunny
replied to a thread
find the range of these functions algebraically: y =x^3 + 2x^2 - 5x + 2 and...
in
Intermediate/Advanced Algebra
Why? What is that supposed to do? It's a Rational Function. Does it have a vertical asymptote? Is the factor that caused the vertical asymptote...
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9 replies | 244 view(s)
09-20-2017,
05:30 PM
tkhunny
replied to a thread
General Polynomials - polynomial of degree 4
in
Intermediate/Advanced Algebra
Isn't it degree four (4)?! An answer like (x-a)(x-b) is degree two (2). That will not do. A setup like (x-a)(x-b)(x-c) is degree three (3). ...
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4 replies | 83 view(s)
09-20-2017,
05:27 PM
tkhunny
replied to a thread
Help with this Class Game/Problem
in
Probability / Statistics
Does the choice of one student influence the choice of ANY other student in ANY way?
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2 replies | 73 view(s)
09-20-2017,
05:22 PM
tkhunny
replied to a thread
"simplify cos(x-30)-cos(x+30)"
in
Geometry and Trig
Another way is simply to add them. There are ways... \cos(x-30^{\circ}) - \cos(x+30^{\circ}) = \cos(x-90^{\circ}) = \sin(x)
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3 replies | 92 view(s)
09-20-2017,
05:16 PM
tkhunny
replied to a thread
The plane V is described by the equation (....) Find a vector equation for V.
in
Calculus
1) How many points determine a unique plane? 2) What do you know about the Cross Product?
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1 replies | 63 view(s)
09-20-2017,
05:12 PM
tkhunny
replied to a thread
Average vs divided sum of totals
in
Arithmetic
Batting Average Player #1: 0.305 Player #2: 0.215 What is the Batting Average for the Pair? Trust me on this.
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1 replies | 105 view(s)
09-20-2017,
05:10 PM
tkhunny
replied to a thread
Calculus 1 - Problem
in
Intermediate/Advanced Algebra
That's not a solution. And you still have x and X in the same equation. Part of success is being careful and consistent. Can you solve this...
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8 replies | 197 view(s)
09-20-2017,
08:47 AM
tkhunny
replied to a thread
Advanced quantitative reasoning homework help??
in
Probability / Statistics
There probably is not a textbook on how your brain works. The reasoning must happen in your head.
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2 replies | 87 view(s)
09-20-2017,
08:46 AM
tkhunny
replied to a thread
Prof by induction : 3|n^2 => 3|n
in
Intermediate/Advanced Algebra
Do two things: 1) Write down the verbal meaning of that symbol, "|". Make sure you know which way it goes. Does the first divide the second or...
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1 replies | 50 view(s)
09-20-2017,
08:43 AM
tkhunny
replied to a thread
How would I solve the following using matrices?
in
Geometry and Trig
Well, let's see your work. We would love to assist you in your efforts. Hint? Change he variable list into a column vector. This might be a...
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2 replies | 105 view(s)
09-20-2017,
08:41 AM
tkhunny
replied to a thread
Which test do I use with 2 variables and unequal testing pools?
in
Probability / Statistics
Show your work, not just your musings. This normally leads to better and faster responses. First impression: Your sample sizes are just barely...
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3 replies | 95 view(s)
09-19-2017,
05:14 PM
tkhunny
replied to a thread
math division problems help
in
Arithmetic
Chop up a nice pie and be fair about it. I mean, a real pie. Apple - coconut cream - something like that.
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2 replies | 116 view(s)
09-19-2017,
05:12 PM
tkhunny
replied to a thread
Calculus 3 - Center of Mass of a Lamina (Polar Coordinates) - I need a better method?
in
Calculus
This is why we invented numerical methods and tables and Computer Algebra Systems.
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3 replies | 85 view(s)
09-17-2017,
10:10 PM
tkhunny
replied to a thread
How would I solve the following set of equations using matrices (row operations)?
in
Geometry and Trig
First, it would seem reasonable to put it in a matrix form. Let's see your work.
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4 replies | 122 view(s)
09-17-2017,
10:07 PM
tkhunny
replied to a thread
Math puzzle: (X.6)(y.4) = 288, X^2-y^2 = -5, X.7-3.x = 19, (Y-x)/(x-y)= -1
in
Intermediate/Advanced Algebra
It's not quite redundant. It adds \text{Tria}\text{ngle} \ne \text{Square}.
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20 replies | 543 view(s)
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About tkhunny
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About tkhunny
Location:
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"Unique Answers Don't Care How You Find Them." - Many may have said it, but I hear it most from me.
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Last Activity
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08:33 PM
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