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Subhotosh Khan
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Subhotosh Khan
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Join Date
06-18-2007
Last Activity
Today
05:42 PM
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Yesterday,
08:58 AM
Subhotosh Khan
replied to a thread
Choose 24 of 78,000 prime numbers
in
Probability / Statistics
If this is a HW assignment from a class, please post the complete assignment as it was presented to you.
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3 replies | 304 view(s)
01-14-2019,
07:24 PM
Subhotosh Khan
replied to a thread
Force Vectors
in
Calculus
In my opinion, that shows you really learnt it! I bet you will breeze through problems like that when you meet those next time (I teach Statics and I...
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6 replies | 259 view(s)
01-14-2019,
03:35 PM
Subhotosh Khan
replied to a thread
Why does not match?
in
Calculus
Please share work - so that we can fix your mistake.
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9 replies | 358 view(s)
01-13-2019,
07:40 PM
Subhotosh Khan
replied to a thread
What is the surface area of this shape?
in
Geometry and Trig
. SA = SA of cylinder + SA of 2 hemispheres = 2*pi*r*h + 2 * pi * r^2 + 2 * pi * r^2 = 2*3.14159*8* 16 + 4*3.14159*64 = 1608.495 = 1608 How...
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5 replies | 346 view(s)
01-13-2019,
04:53 PM
Subhotosh Khan
replied to a thread
GEOMETRY problem
in
Geometry and Trig
Otis took both my red pen and blue pen!!! There is no justice in this world!!!
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22 replies | 624 view(s)
01-13-2019,
04:44 PM
Subhotosh Khan
replied to a thread
Unexplained properties beside Law of Sine and Cosine.
in
Geometry and Trig
But you said in post 1: Which is it?!! Please post the exact problem statement.
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14 replies | 553 view(s)
01-13-2019,
03:31 PM
Subhotosh Khan
replied to a thread
Unexplained properties beside Law of Sine and Cosine.
in
Geometry and Trig
By that, do you mean unproven? How do you know these are unexplained?
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14 replies | 553 view(s)
01-13-2019,
03:09 PM
Subhotosh Khan
replied to a thread
Proof for parallel lines
in
Geometry and Trig
What other data are available?
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8 replies | 441 view(s)
01-13-2019,
03:04 PM
Subhotosh Khan
replied to a thread
Rosary and Penance - https://www.freemathhelp.com/forum/threads/114104-what-is-happen
in
Math Odds & Ends
I was teaching as a lecturer and I prevented my students from calling me Dr. Khan. I told them, however, they could call me "Master" Khan instead! ...
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30 replies | 536 view(s)
01-13-2019,
01:48 PM
Subhotosh Khan
replied to a thread
Weird loan
in
Finance/Business Math
1000*(1.01)^12 = p*(1.01)^11 + p(1.01)^10 + p(1.01)^9 +p(1.01)^8 + p(1.01)^3 + p(1.01))^2 + p(1.01) + p p*(1.01)^11 + p(1.01)^10 + p(1.01)^9...
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2 replies | 396 view(s)
01-13-2019,
09:27 AM
Subhotosh Khan
replied to a thread
Algebra begginer
in
Beginning Algebra
Hints: What is the surface area of each of the bases (two) of a cylinder? What is the surface area of a cylinder - excluding the two bases? ...
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4 replies | 445 view(s)
01-13-2019,
09:02 AM
Subhotosh Khan
replied to a thread
Parabolas
in
Intermediate/Advanced Algebra
.
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5 replies | 385 view(s)
01-13-2019,
08:45 AM
Subhotosh Khan
replied to a thread
Predicting Card sequence
in
Probability / Statistics
Start with say 3 cards. What is the probability that you could predict - what is the top card. Turn it over and check. What is the probability...
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10 replies | 385 view(s)
01-13-2019,
07:26 AM
Subhotosh Khan
replied to a thread
tan(x/2-π/2)=sqrt2 ?
in
Geometry and Trig
How did you get that answer? Please share your work. That answer can be further simplified - may that is what you need to supply!
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3 replies | 336 view(s)
01-12-2019,
04:05 PM
Subhotosh Khan
replied to a thread
Predicting Card sequence
in
Probability / Statistics
What is meant by "in order"? First all the spades (A, K to 2) - then the diamonds - or something else?
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10 replies | 385 view(s)
01-12-2019,
12:50 PM
Subhotosh Khan
replied to a thread
Simply love this one...
in
Math Odds & Ends
Should we "lose" his posts again and demote him to "Novice"? By the way the second reference to violence - "Physical assault on diabetic person" -...
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9 replies | 411 view(s)
01-12-2019,
11:11 AM
Subhotosh Khan
replied to a thread
Simply love this one...
in
Math Odds & Ends
This can be regarded as a physical assault on a diabetic person!!
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9 replies | 411 view(s)
01-12-2019,
11:03 AM
Subhotosh Khan
replied to a thread
Rosary and Penance - https://www.freemathhelp.com/forum/threads/114104-what-is-happen
in
Math Odds & Ends
Violence - what violence? He was just contemplating a more "beautiful" you - rosary around your neck like a shiny pearl necklace!!
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30 replies | 536 view(s)
01-12-2019,
11:00 AM
Subhotosh Khan
replied to a thread
Find possible extreme points according to second order condition
in
Calculus
Can you please describe - What is second order condition?
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3 replies | 271 view(s)
01-12-2019,
10:56 AM
Subhotosh Khan
replied to a thread
Physics: Electric Fields and Projectile Motion
in
Advanced Math
Have you done any work with the parts (a), (b), etc.? If you did - please share your work - so that we know where to begin to help you!!
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7 replies | 466 view(s)
01-11-2019,
09:32 PM
Subhotosh Khan
replied to a thread
Help x-intercepts
in
Beginning Algebra
.
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6 replies | 448 view(s)
01-11-2019,
08:14 PM
Subhotosh Khan
replied to a thread
Help x-intercepts
in
Beginning Algebra
You are not posting correct problems. As posted. you do not have a quadratic equation. In your other post, I guessed the correct equation and...
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6 replies | 448 view(s)
01-11-2019,
04:19 PM
Subhotosh Khan
replied to a thread
Physics: Electric Fields and Projectile Motion
in
Advanced Math
Bump!!
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7 replies | 466 view(s)
01-11-2019,
09:42 AM
Subhotosh Khan
replied to a thread
Range of y=x+1/x
in
Intermediate/Advanced Algebra
In my opinion, the easiest way to "approximate" maxima and minima (turning points) - without calculus - would be to plot the function (most of the...
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5 replies | 359 view(s)
01-11-2019,
09:30 AM
Subhotosh Khan
replied to a thread
Help in QUADRIC
in
Beginning Algebra
Thanks for including your answers with the question.
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3 replies | 295 view(s)
01-11-2019,
09:12 AM
Subhotosh Khan
replied to a thread
Physics: Electric Fields and Projectile Motion
in
Advanced Math
This one I am going leave for Dan (topsquark).......
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7 replies | 466 view(s)
01-10-2019,
02:19 PM
Subhotosh Khan
replied to a thread
What is the volume of this shape?
in
Geometry and Trig
The image has been clipped off! Please post the complete problem. You may want to type in the problem statement.
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3 replies | 271 view(s)
01-10-2019,
11:33 AM
Subhotosh Khan
replied to a thread
Jerk and Creep - in Mechanics - contd. from https://www.freemathhelp.com/forum/thread
in
Math Odds & Ends
You forgot Creep - in Mechanics of Materials. An excellent anti-dote of jerk....
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5 replies | 226 view(s)
01-10-2019,
11:15 AM
Subhotosh Khan
replied to a thread
Perimeter inequality
in
Geometry and Trig
How did you prove that (a+b+c) is greater than 6? Please share your work - indicating exactly where you are stuck.
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3 replies | 169 view(s)
01-09-2019,
08:30 PM
Subhotosh Khan
replied to a thread
Equation of free fall
in
Calculus
When you differentiate the "s" twice - you'll get a constant term. That "constant acceleration" makes your problem a special case - where we can...
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14 replies | 300 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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17,989
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General Information
Last Activity
Today
05:42 PM
Join Date
06-18-2007
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