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tkhunny
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tkhunny
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04-12-2005
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12:43 AM
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Yesterday,
02:45 PM
tkhunny
replied to a thread
Model Kit Scale
in
Arithmetic
Yes.
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5 replies | 118 view(s)
Yesterday,
09:10 AM
tkhunny
replied to a thread
Finding unknown values in coordinate geometry
in
Geometry and Trig
Why do you need to know the hypotenuse up front? Can you determine the SLOPE of line AB and line AC an line BC?
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2 replies | 46 view(s)
03-22-2018,
09:40 PM
tkhunny
replied to a thread
Trying to help my neice with Algebra..PLEASE HELP
in
News
For starters, we probably need a better description for f(x). Anyway, if we want f(x) = 60, simply do the substitution. 60 = {full expression...
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4 replies | 66 view(s)
03-22-2018,
04:39 PM
tkhunny
replied to a thread
Model Kit Scale
in
Arithmetic
Personally, I don't like any of those so far presented. In the linear scale, Model:Reality::1:72
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5 replies | 118 view(s)
03-21-2018,
04:47 PM
tkhunny
replied to a thread
e^pi or pi^e
in
Intermediate/Advanced Algebra
Have someone else use a calculator and tell you? You can add a logarithm transformation and ponder a different problem. ...
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11 replies | 188 view(s)
03-21-2018,
04:41 PM
tkhunny
replied to a thread
Maclaurin series question help
in
Calculus
Have to agree with your teacher. You created 1/(1+x). Must be missing a sign consistently.
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1 replies | 48 view(s)
03-20-2018,
05:22 PM
tkhunny
replied to a thread
interpolation using roots values
in
Probability / Statistics
This is a Mean Value Theorem simple Linear Interpolation. 1) y(k) * y(k+1) < 0 means only that you have evaluated your function in two places, and...
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1 replies | 66 view(s)
03-19-2018,
10:12 AM
tkhunny
replied to a thread
calculating limes aprouching infinity for two variables function
in
Calculus
It's not always obvious how to demonstrate such a thing. It often requires some creativity. Try factoring. If you can find equivalent expressions...
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1 replies | 49 view(s)
03-19-2018,
10:09 AM
tkhunny
replied to a thread
14 month 360/year loan interest
in
Finance/Business Math
Why is "over" ANY different?
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5 replies | 128 view(s)
03-17-2018,
09:27 PM
tkhunny
replied to a thread
Local Error: Euler/Modified Euler - moved
in
Differential Equations
1) Are you SURE you cannot find circumstances where each is the more accurate? 2) What's stopping you from calculating the specified partial...
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5 replies | 201 view(s)
03-17-2018,
10:22 AM
tkhunny
replied to a thread
Calculate a limit with n!
in
Calculus
See if a logarithm transformation helps. \dfrac{2^{n}\cdot\log(3)}{n\cdot\log(n!)}
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1 replies | 78 view(s)
03-17-2018,
10:03 AM
tkhunny
replied to a thread
Is my calc. for triple integral correct? int[B]x^2y^2z^2 dV = 1/5, B={0 <=x<=y<=z<=1}
in
Calculus
That's the spirit. The ONLY alteration to your coding was a beginning and an ending . Otherwise, you're gold.
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5 replies | 198 view(s)
03-16-2018,
03:30 PM
tkhunny
replied to a thread
Is my calc. for triple integral correct? int[B]x^2y^2z^2 dV = 1/5, B={0 <=x<=y<=z<=1}
in
Calculus
Off the top of my head, I would expect something not very far away from ^3 = 1/64. 1/5 seems a little large. Please demonstrate any intermediate...
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5 replies | 198 view(s)
03-16-2018,
11:14 AM
tkhunny
replied to a thread
Find the locus of points (x,y,z) such that vector from (2,−1,4) to (x,y,z) is...
in
Calculus
Perhaps there is a dot-product in your future?
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3 replies | 186 view(s)
03-15-2018,
03:03 PM
tkhunny
replied to a thread
Factorise expression HELP: Does 8ax + 40cx + 3a +18c equal (8x + 3)(a + c) ?
in
Beginning Algebra
You didn't update with the answers to my questions.
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14 replies | 474 view(s)
03-15-2018,
03:02 PM
tkhunny
replied to a thread
Calculate average with a mutiplier
in
Finance/Business Math
Small wonder you cannot discern this question that makes little sense. What does "as a multiplier" mean? What is your "average number per...
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4 replies | 169 view(s)
03-14-2018,
09:10 PM
tkhunny
replied to a thread
Factorise expression HELP: Does 8ax + 40cx + 3a +18c equal (8x + 3)(a + c) ?
in
Beginning Algebra
What rules are you using? Can you UNfactorize and get back to where you started? Try grouping things that are alike. 8ax + 40cx + 3a + 18c ...
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14 replies | 474 view(s)
03-14-2018,
10:05 AM
tkhunny
replied to a thread
what is the integral of 2^(2x)? need help tonight, exam is tomorrow
in
Calculus
And another on another website.
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21 replies | 536 view(s)
03-13-2018,
08:43 PM
tkhunny
replied to a thread
Factoring (sqrt(x-5)-2)/(x-9): find limit as x goes to 9
in
Intermediate/Advanced Algebra
Please demonstrate: \dfrac{\sqrt{x-5} - 2}{x-9}\cdot\dfrac{\sqrt{x-5} + 2}{\sqrt{x-5} + 2}
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1 replies | 74 view(s)
03-13-2018,
01:03 PM
tkhunny
replied to a thread
If 2^x = 10, then how to calculate the value of 'x'?
in
Intermediate/Advanced Algebra
2^3 = 8 2^4 = 16 It's in there, somewhere. Have you considered a calculator? Also, the important rule on the last question might be...
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36 replies | 981 view(s)
03-13-2018,
12:18 PM
tkhunny
replied to a thread
How to calculate the value of 'y', if the log base 2 y = 5 and if log base y 8 = 3?
in
Intermediate/Advanced Algebra
Typically, apply this principle: \log_{b}(a) = c \iff b^{\;c} = a. Recall that a Logarithm IS an Exponent.
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1 replies | 52 view(s)
03-13-2018,
12:14 PM
tkhunny
replied to a thread
what is the integral of 2^(2x)? need help tonight, exam is tomorrow
in
Calculus
Q: What happens when you post the same question in multiple places, on multiple bulletin boards, and you get answers from multiple volunteers? A:...
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21 replies | 536 view(s)
03-13-2018,
09:12 AM
tkhunny
replied to a thread
Differentiate y = x^2 e^{2x}, = x^2 ln(x), = sin(x)/x, = sqrt[x]/cos(x), = 2 sin(...
in
Calculus
a. Use the Product Rule b. Use the Quotient Rule. c. Use the Chain Rule. These are fundamental principles.
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5 replies | 186 view(s)
03-13-2018,
09:10 AM
tkhunny
replied to a thread
Factorise x^4 - x^2 + 1 fulling by completing the square
in
Beginning Algebra
Could you do it if it were z^{2} - z +1?
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9 replies | 362 view(s)
03-13-2018,
09:08 AM
tkhunny
replied to a thread
Combination Problem (Please help)
in
Probability / Statistics
?? You aren't picking BOTH toppings twice.
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7 replies | 140 view(s)
03-12-2018,
09:31 AM
tkhunny
replied to a thread
How to calculate the distance from center to sides.
in
Geometry and Trig
If they are REGULAR figures, also construct center-to-vertex and use your best triangle solution skills. Note: It may help to know the name of...
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2 replies | 117 view(s)
03-11-2018,
12:46 AM
tkhunny
replied to a thread
R squared value for a scatter plot is over 1: (97*2,629,673 - 17056^2)
in
Probability / Statistics
Whoops. Totally my fault. It appears I edited, rather than copied. Haven't done that in ages. Apologies to the OP.
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3 replies | 117 view(s)
03-11-2018,
12:43 AM
tkhunny
replied to a thread
Calculus limits and negative infinity: lim[x->1](x-7)/(x2 + x - 2)
in
Calculus
No disagreement, but I would like a statement that there was even the tiniest thought about continuity prior to substitution. Substitution...
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10 replies | 425 view(s)
03-10-2018,
01:43 PM
tkhunny
replied to a thread
L'Hopital's Rule: lim[x -> 1] [(x e^x - e)/(x^2 - 1)]: how did they get the exponent?
in
Calculus
e did not suddently gain an exponent. \dfrac{d}{dx}e = 0 Your mysterious 'e' actually just vanished. Now you have to figure out where the e^{x}...
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2 replies | 114 view(s)
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About tkhunny
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About tkhunny
Location:
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Occupation:
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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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