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Subhotosh Khan
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Subhotosh Khan
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Join Date
06-18-2007
Last Activity
Today
11:03 AM
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Today,
11:02 AM
Subhotosh Khan
replied to a thread
Word problem - helping 10 year old.
in
Arithmetic
In my opinion, this is an ill-posed problem. My interpretation of "690 ant dies in four days" - will include dead-ants of fourth night. Then I...
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2 replies | 18 view(s)
Yesterday,
02:13 PM
Subhotosh Khan
replied to a thread
Exponential equations and logarithms
in
Intermediate/Advanced Algebra
You did not tell us what you are being asked in each of the questions (and exactly where you are getting stuck!)
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14 replies | 139 view(s)
12-16-2018,
07:55 PM
Subhotosh Khan
replied to a thread
Resolutionmethod and counterexample: Is logical statement true or false?
in
Advanced Math
What picture? Where picture?
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2 replies | 114 view(s)
12-16-2018,
05:15 PM
Subhotosh Khan
replied to a thread
This one has me stumped - entrance exam for junior high school in Japan
in
Geometry and Trig
If we need to rotate the shaded areas and make those horizontal and vertical - would the common shaded area remain same? That is why I thought...
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15 replies | 258 view(s)
12-16-2018,
11:24 AM
Subhotosh Khan
replied to a thread
Hard progression: x0=1, x(n+1)=2x(n)+1, S(n)=x0+x1+...x(n). Find S(2018)
in
Intermediate/Advanced Algebra
x(n) + x(n+1) = 3x(n) + 1 x(n-1) + x(n) + x(n+1) = x(n-1) + 3x(n) + 1 = 7x(n-1) + 4 continue and see if any pattern emerges....
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5 replies | 173 view(s)
12-15-2018,
08:22 PM
Subhotosh Khan
replied to a thread
Need help with 4th edge of perimeter
in
Geometry and Trig
Your land (block) is quadrilateral shaped (straight-line edges)?
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4 replies | 146 view(s)
12-15-2018,
08:20 PM
Subhotosh Khan
replied to a thread
Maths word problem: "Simon went on a road trip for 4 days...."
in
Arithmetic
Which grade does your son attend? Moe relevant - what topic of mathematics produced this problem? Did he start algebra yet?
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8 replies | 235 view(s)
12-15-2018,
08:16 PM
Subhotosh Khan
replied to a thread
This one has me stumped - entrance exam for junior high school in Japan
in
Geometry and Trig
Is it sum of the shaded parts or each of the shaded parts?
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15 replies | 258 view(s)
12-15-2018,
03:39 PM
Subhotosh Khan
replied to a thread
Stuck on line integral: F=⟨y+z,z+x,x+y), γ is 1/4-circle w/ center (1,1,1)
in
Calculus
I interpret: the question that OP asked in the forum was wrong. The question posed to OP was correct.
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7 replies | 298 view(s)
12-15-2018,
10:15 AM
Subhotosh Khan
replied to a thread
Structures: "List the topics covered in structures maths lessons..."
in
Geometry and Trig
Please look at the assigned text book and see what do they list under "structured math". As far as I know "structured math" is not a universally...
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7 replies | 248 view(s)
12-14-2018,
10:09 AM
Subhotosh Khan
replied to a thread
How does this work? Express 1/(r(r+2)) as a partial fraction decomp.
in
Intermediate/Advanced Algebra
Write out the term for r = 5 and check the first term!
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1 replies | 106 view(s)
12-13-2018,
10:39 AM
Subhotosh Khan
replied to a thread
Complex numbers: find ((1+i*sqrt(3))/(1-i))^80 in algebraic form.
in
Intermediate/Advanced Algebra
\displaystyle{\left^{80}} = \displaystyle{\left^{80}} continue....
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3 replies | 180 view(s)
12-13-2018,
09:27 AM
Subhotosh Khan
replied to a thread
Projected Gradient Descent: Minimize (1/2)(x_1)^2 + (1/2)(x_2)^2, sub. to 2-x_1-x_2=0
in
Advanced Math
Can you please define "gradient projection" method for us?
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3 replies | 163 view(s)
12-13-2018,
06:55 AM
Subhotosh Khan
replied to a thread
What are the meanings of "≥ 25" and "< 8" ?
in
Arithmetic
If we write: x < y That means that x is lesser than y. If we write: x > y
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6 replies | 199 view(s)
12-12-2018,
06:05 PM
Subhotosh Khan
replied to a thread
Find the limit of (1-cos3x)/(sin3x) as x -> pi/3 from the left
in
Calculus
Do you have access to a graphing calculator?
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5 replies | 214 view(s)
12-12-2018,
02:06 PM
Subhotosh Khan
replied to a thread
Need help pls!!! (19 questions/parts related to polygons, circles, etc)
in
Geometry and Trig
Too small to read!
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16 replies | 507 view(s)
12-12-2018,
09:48 AM
Subhotosh Khan
replied to a thread
Tutoring and such...
in
Math Odds & Ends
But that - the music, the rhythm, the words - is an integral part of poetry! It is like saying - take away the color from Monet's painting and all...
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13 replies | 339 view(s)
12-12-2018,
09:37 AM
Subhotosh Khan
replied to a thread
Need some exercises w/ solns for compound interest, present value, nominal rate, etc
in
Finance/Business Math
If you google: worksheets "compound interest" - you'll find many websites with problem sets. Try it and let us know what you found.....
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7 replies | 211 view(s)
12-11-2018,
06:59 AM
Subhotosh Khan
replied to a thread
recommendations?
in
Intermediate/Advanced Algebra
$ 5.69 + FREE Shipping - not even $10
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21 replies | 563 view(s)
12-10-2018,
01:44 PM
Subhotosh Khan
replied to a thread
Chefs Learning Trigonometry
in
Math Odds & Ends
If you get 9 guests - what are you going to do with the left-over 7 pieces (after each guest gets 1 piece - and yourself none)?
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20 replies | 430 view(s)
12-10-2018,
12:32 PM
Subhotosh Khan
replied to a thread
binomial theorem / expansion
in
Calculus
expand 3! = 6 2! = 2 (n-2)! = (n-2)* and simplify
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7 replies | 266 view(s)
12-10-2018,
12:24 PM
Subhotosh Khan
replied to a thread
Pink Star for Jomo (ref. www.freemathhelp.com/forum/threads/113726-How-do-I-so)
in
Math Odds & Ends
We knew that! That is why we said Pink Floyd - but not Pink. Every other color"full" band - but not Pink. We are an obstinate bunch......
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10 replies | 290 view(s)
12-10-2018,
09:00 AM
Subhotosh Khan
replied to a thread
Chefs Learning Trigonometry
in
Math Odds & Ends
That's an irrational thought!!
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20 replies | 430 view(s)
12-10-2018,
08:59 AM
Subhotosh Khan
replied to a thread
Simultaneous equation: 3 * ([x * 71 / 40] + 6.5) = [y * 96 / 40] + 0.9
in
Beginning Algebra
Can you share ALL your work - so that we can understand your mistake and unravel it.
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5 replies | 332 view(s)
12-09-2018,
09:53 PM
Subhotosh Khan
replied to a thread
Pink Star for Jomo (ref. www.freemathhelp.com/forum/threads/113726-How-do-I-so)
in
Math Odds & Ends
Moody Blues
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10 replies | 290 view(s)
12-09-2018,
06:19 PM
Subhotosh Khan
replied to a thread
Chefs Learning Trigonometry
in
Math Odds & Ends
If you are really sure that you want to be Chef - and not an engineer or Physicist - you do not need trigonometry. However, if you change your...
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20 replies | 430 view(s)
12-09-2018,
06:02 PM
Subhotosh Khan
replied to a thread
Pink Star for Jomo (ref. www.freemathhelp.com/forum/threads/113726-How-do-I-so)
in
Math Odds & Ends
and the pink elephant that brought in the Coke...
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10 replies | 290 view(s)
12-09-2018,
03:52 PM
Subhotosh Khan
replied to a thread
A spent $27, E $9, S $36; who pays how much to whom, to even up what each paid?
in
Arithmetic
All most 9 hours gone by - since the OP appeared. Several responses with probing questions - no response from OP!! I wonder......
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7 replies | 243 view(s)
12-09-2018,
12:42 PM
Subhotosh Khan
replied to a thread
How to solve these problems: $8,000 is to be repaid with quarterly payments
in
Finance/Business Math
.
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8 replies | 252 view(s)
12-09-2018,
12:39 PM
Subhotosh Khan
replied to a thread
Linear Equations: teacher distributes $2 among 20 children...
in
Beginning Algebra
Your thought process and the two equations are correct. You have two equations and two unknowns. But this is just the beginning. Later in your...
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5 replies | 383 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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17,891
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Last Activity
Today
11:03 AM
Join Date
06-18-2007
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