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Subhotosh Khan
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Subhotosh Khan
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Join Date
06-18-2007
Last Activity
02-15-2018
10:42 PM
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02-15-2018,
08:50 AM
Subhotosh Khan
replied to a thread
Newton's Method for matrix-valued functions; finding square root of given matrix
in
Advanced Math
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
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1 replies | 179 view(s)
02-14-2018,
12:58 PM
Subhotosh Khan
replied to a thread
A ship has a centrally mounted turbine engine w/ axis of rotation aligned along...
in
Advanced Math
What is gyroscopic couple? What is the mathematical formula that will describe it? This a dynamics problem with rotating axes of reference. ...
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3 replies | 159 view(s)
02-14-2018,
11:55 AM
Subhotosh Khan
replied to a thread
A ship has a centrally mounted turbine engine w/ axis of rotation aligned along...
in
Advanced Math
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
see more
3 replies | 159 view(s)
02-13-2018,
09:33 AM
Subhotosh Khan
replied to a thread
Need help with factorisation of (x^2+2x)^2-2(x^2+2x)- 3
in
Intermediate/Advanced Algebra
(x^2+2x)^2-2(x^2+2x)- 3 substitute: u = x^2 + 2x, then, (x^2+2x)^2-2(x^2+2x)- 3 = u^2 - 2*u + 3 The above is a quadratic equation in...
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3 replies | 150 view(s)
02-12-2018,
05:29 PM
Subhotosh Khan
replied to a thread
Probability Theory: Imagine there is an election with 5 candidates and 20 voters.
in
Probability / Statistics
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
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5 replies | 203 view(s)
02-11-2018,
05:41 PM
Subhotosh Khan
replied to a thread
Need help w/ expanding cosine fcn: (1/2)theta_1^2 + cos(theta_1) - cos(theta) =
in
Calculus
What is the McLauren series expansion of sin(Θ/2)? After you square it and a bit of tedious algebra - you should be there!
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4 replies | 181 view(s)
02-11-2018,
02:55 PM
Subhotosh Khan
replied to a thread
Need help w/ expanding cosine fcn: (1/2)theta_1^2 + cos(theta_1) - cos(theta) =
in
Calculus
That is a basic trigonometric relation. Do you know the angle addition rules like: cos(A+B) = cos(A) * cos(B) - sin(A) * sin(B)
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4 replies | 181 view(s)
02-11-2018,
11:39 AM
Subhotosh Khan
replied to a thread
Ford sold 2,480,942 new vehicles in 2014, a 29.1% increase over 2010. Find 2010 vol.
in
Intermediate/Advanced Algebra
That is not quite correct. At 2014, the # of vehicles were 29.1% more than the number of vehicles present on 2010. Let us assume the # of vehicles...
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4 replies | 218 view(s)
02-10-2018,
12:33 PM
Subhotosh Khan
replied to a thread
Cryptic Sport?
in
Math Odds & Ends
Write it with "white" ink - and it hides against the white background.
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7 replies | 369 view(s)
02-10-2018,
12:25 PM
Subhotosh Khan
replied to a thread
Need help w/: 1. E(p,m) = Ap−amb, 2. strict concavity/convexity, 3. maximize profit
in
Calculus
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
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2 replies | 188 view(s)
02-09-2018,
01:26 PM
Subhotosh Khan
replied to a thread
Physical Science II - Mph of a dragster at the finish line of a race- ?
in
Calculus
Did you adjust for the length to be converted to meters?
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8 replies | 369 view(s)
02-08-2018,
08:47 PM
Subhotosh Khan
replied to a thread
Alg II / Pre-Calc w/ Logs: Given log_x(y)+log_y(x)=3, find log_x(y^2)+log_y(x^2)
in
Intermediate/Advanced Algebra
2logx(y)+2logy(x) ......... factor out 2 = 2 * x(y)+logy(x)] ...... continue....
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5 replies | 246 view(s)
02-08-2018,
01:11 PM
Subhotosh Khan
replied to a thread
Annual Compound Interest Calculation: "How would years 3 and 4 appear in the above?"
in
Intermediate/Advanced Algebra
.
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6 replies | 278 view(s)
02-08-2018,
11:37 AM
Subhotosh Khan
replied to a thread
Physical Science II - Mph of a dragster at the finish line of a race- ?
in
Calculus
Why did you assume a = 6*g (instead of 5.97*g)? And: Dx = 1000 ft = 304.8 meters
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8 replies | 369 view(s)
02-07-2018,
08:31 PM
Subhotosh Khan
replied to a thread
Annual Compound Interest Calculation: "How would years 3 and 4 appear in the above?"
in
Intermediate/Advanced Algebra
.
see more
6 replies | 278 view(s)
02-06-2018,
02:01 PM
Subhotosh Khan
replied to a thread
A probability question literally about homework
in
Probability / Statistics
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
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4 replies | 225 view(s)
02-06-2018,
01:11 PM
Subhotosh Khan
replied to a thread
Can't understand this concept: lim_{x->infty} P(x)=(KP_0 e^{2x})/(K+P_0(e^{2x}-1))
in
Calculus
What would you get if you divide - both the numerator and the denominator - by e^(2x)? and then take the limit....
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10 replies | 385 view(s)
02-06-2018,
01:04 PM
Subhotosh Khan
replied to a thread
Not Pascal's Triangle, but does it have name or inventor? "Apex (playing-)Card Trick"
in
Intermediate/Advanced Algebra
Where did you (How did you) come across this triangle? You do have some reference (i.e. it is not completely your creation - yes?!)
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8 replies | 369 view(s)
02-06-2018,
08:30 AM
Subhotosh Khan
replied to a thread
Simple module: Let R be a ring with 1 and F a family of simple left R modules.
in
Advanced Math
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
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1 replies | 206 view(s)
02-06-2018,
08:29 AM
Subhotosh Khan
replied to a thread
Business Mathemetics: began w/ joint capital of $790000, earned profit of $21296
in
Finance/Business Math
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
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2 replies | 150 view(s)
02-05-2018,
04:49 PM
Subhotosh Khan
replied to a thread
Need help finding the rule to this pattern: 3, 4, 3, 4, 5, 3, 4, 5, _, _, _, _, _, 7
in
Arithmetic
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
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5 replies | 389 view(s)
02-05-2018,
11:48 AM
Subhotosh Khan
replied to a thread
Help me to know how much was lost in a shift
in
Finance/Business Math
What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll...
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6 replies | 354 view(s)
02-04-2018,
07:47 PM
Subhotosh Khan
replied to a thread
Complicated beam: slope, deflection at ends & at 3.8 m from left end
in
Intermediate/Advanced Algebra
It does matter! There are several ways to solve the problem. I was hoping that I could point you to a similar example problem in your text-book...
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8 replies | 416 view(s)
02-04-2018,
06:02 PM
Subhotosh Khan
replied to a thread
Complicated beam: slope, deflection at ends & at 3.8 m from left end
in
Intermediate/Advanced Algebra
What is the name of the textbook (and the author of the book) that you follow in the class?
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8 replies | 416 view(s)
02-04-2018,
04:38 PM
Subhotosh Khan
replied to a thread
How to find top and sides of trapezoid when all of them are equal?
in
Geometry and Trig
As posted - you cannot! Please post the exact problem as it was presented to you. I think some information may have been omitted.
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1 replies | 98 view(s)
02-04-2018,
02:11 PM
Subhotosh Khan
replied to a thread
FPS Game Development XP function: finding equation from data points
in
Probability / Statistics
Excel says the equation for best-fit trend line is: y = 2.8228 x^2 - 17.262 x + 58.129
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5 replies | 280 view(s)
02-04-2018,
12:50 PM
Subhotosh Khan
replied to a thread
Complicated beam: slope, deflection at ends & at 3.8 m from left end
in
Intermediate/Advanced Algebra
Is this a "Mechanics of Materials" class? Which text-book are you following for this class?
see more
8 replies | 416 view(s)
02-04-2018,
09:50 AM
Subhotosh Khan
replied to a thread
Complicated beam: slope, deflection at ends & at 3.8 m from left end
in
Intermediate/Advanced Algebra
What is it that you need to solve for this beam? This beam has multiple zones - and your deflection (and slope) function will be "piece-wise...
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8 replies | 416 view(s)
02-03-2018,
06:47 PM
Subhotosh Khan
replied to a thread
Particle Motion Problems: motion is given by x=-2t2 and y=t3-3t+9, t>0
in
Calculus
If the tangent to the curve is parallel to x-axis - what can you say about dy/dx of the curve at that point?
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7 replies | 310 view(s)
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About Subhotosh Khan
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“... mathematics is only the art of saying the same thing in different words” - B. Russell
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Last Activity
02-15-2018
10:42 PM
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06-18-2007
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