Register
Help
Remember Me?
What's New?
Forum
New Posts
FAQ
Calendar
Community
Member List
Forum Actions
Mark Forums Read
Quick Links
Today's Posts
View Site Leaders
Math Lessons by Subject
Calculators/Solvers
Advanced Search
Member List
Subhotosh Khan
If this is your first visit, be sure to check out the
FAQ
by clicking the link above. You may have to
register
before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.
Subhotosh Khan
Elite Member
Find latest posts
Find latest started threads
Mini Statistics
Join Date
06-18-2007
Last Activity
Yesterday
07:42 PM
Tab Content
Subhotosh Khan's Activity
About Me
Tab Content
All
Subhotosh Khan
Photos
New Activity (
)
Please reload this page to view the 200+ new activity items that have been created.
Older Activity
Yesterday,
06:58 AM
Subhotosh Khan
replied to a thread
Logic Problem
in
Arithmetic
No... just stop playing hockey and get hit on the head.....
see more
5 replies | 210 view(s)
Yesterday,
06:55 AM
Subhotosh Khan
replied to a thread
Polynomial Problem - Please Help!
in
Intermediate/Advanced Algebra
Please check your post for correctness. p(x) - as posted - is a 3rd order polynomial. q(x) - as posted - is a 4th order polynomial. Those...
see more
5 replies | 187 view(s)
01-20-2019,
10:34 PM
Subhotosh Khan
replied to a thread
Logic Problem
in
Arithmetic
It does: 6 people live on 6 different streets
see more
5 replies | 210 view(s)
01-20-2019,
06:39 PM
Subhotosh Khan
replied to a thread
limit of integral
in
Calculus
Did you try "integration by parts"? x^n/(x^2+2) = x^(n-1) * x/(x^2+1)
see more
3 replies | 195 view(s)
01-20-2019,
04:20 PM
Subhotosh Khan
replied to a thread
limit of integral
in
Calculus
Does your problem look like this: \displaystyle{\lim_{n \to \infty}\left }
see more
3 replies | 195 view(s)
01-20-2019,
04:10 PM
Subhotosh Khan
replied to a thread
Simplifying Difference Quotients
in
Calculus
What do you get after rationalizing the numerator? Please share with us!
see more
3 replies | 181 view(s)
01-20-2019,
04:06 PM
Subhotosh Khan
replied to a thread
trigonometry identities equation
in
Geometry and Trig
Hint: cos(2x) = 2cos^2x - 1 sin(2x) = 2*sin(x) * cos(x)
see more
3 replies | 158 view(s)
01-20-2019,
01:05 PM
Subhotosh Khan
replied to a thread
Unit Circle Trigonometry Quick Question
in
Geometry and Trig
Another way would be to plot y = tan(\theta) and plot y = 3 in same graph. Then observe at which points those graphs intersect each other.
see more
3 replies | 185 view(s)
01-20-2019,
10:46 AM
Subhotosh Khan
replied to a thread
Finding values of an expression using Calculus and Algebra
in
Calculus
Do you know the Taylor series expansion of (1+x)^n ?
see more
2 replies | 136 view(s)
01-19-2019,
06:53 PM
Subhotosh Khan
replied to a thread
Complex number algebra
in
Beginning Algebra
Otis swiped my red ink.......
see more
12 replies | 389 view(s)
01-19-2019,
06:51 PM
Subhotosh Khan
replied to a thread
proof by induction
in
Intermediate/Advanced Algebra
Please share some of your attempts (even though futile) - with us.
see more
1 replies | 163 view(s)
01-19-2019,
03:17 PM
Subhotosh Khan
replied to a thread
Finding the Share
in
Probability / Statistics
This cannot be the problem assigned to you. Please post the problem - exactly - as it was assigned to you.
see more
6 replies | 263 view(s)
01-19-2019,
03:13 PM
Subhotosh Khan
replied to a thread
Complex number algebra
in
Beginning Algebra
Remember: i^2 = -1
see more
12 replies | 389 view(s)
01-18-2019,
09:27 PM
Subhotosh Khan
replied to a thread
What is the assumed base when applying logs to both sides?
in
Intermediate/Advanced Algebra
NO .... NO .... Double NO!!! Just like while dividing 26 by 6 You CANNOT cancel off 6's and declare the answer to be 2.
see more
11 replies | 402 view(s)
01-18-2019,
03:10 PM
Subhotosh Khan
replied to a thread
Complex number algebra
in
Beginning Algebra
Did you follow the first hint - i.e. - "multiply out the let hand side of the complex equation" What did you get?
see more
12 replies | 389 view(s)
01-18-2019,
08:25 AM
Subhotosh Khan
replied to a thread
What is the assumed base when applying logs to both sides?
in
Intermediate/Advanced Algebra
The base can be any real number as long as you use same base on both sides. When the bases are not "explicitly" defined, the assumption is that...
see more
11 replies | 402 view(s)
01-16-2019,
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.
see more
4 replies | 419 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...
see more
6 replies | 312 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.
see more
9 replies | 433 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...
see more
5 replies | 384 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!!!
see more
23 replies | 769 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.
see more
14 replies | 626 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?
see more
14 replies | 626 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?
see more
8 replies | 492 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! ...
see more
30 replies | 679 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...
see more
2 replies | 441 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? ...
see more
4 replies | 501 view(s)
01-13-2019,
09:02 AM
Subhotosh Khan
replied to a thread
Parabolas
in
Intermediate/Advanced Algebra
.
see more
5 replies | 445 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...
see more
10 replies | 462 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!
see more
3 replies | 367 view(s)
More Activity
No More Results
No Recent Activity
About Subhotosh Khan
Basic Information
Signature
“... mathematics is only the art of saying the same thing in different words” - B. Russell
Statistics
Total Posts
Total Posts
18,005
Posts Per Day
4.25
General Information
Last Activity
Yesterday
07:42 PM
Join Date
06-18-2007
Referrals
2