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Subhotosh Khan
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Subhotosh Khan
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Join Date
06-18-2007
Last Activity
Yesterday
09:16 PM
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Yesterday,
08:42 PM
Subhotosh Khan
replied to a thread
sec 2x = 2 between -Pi < x < Pi
in
Geometry and Trig
.
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4 replies | 43 view(s)
Yesterday,
08:31 PM
Subhotosh Khan
replied to a thread
The Brown Family Children
in
Beginning Algebra
First of all we need to assume there are only three children in the family. Let us also assume: Charlie Brown's age = C Sally's age = S ...
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4 replies | 38 view(s)
12-10-2017,
02:09 PM
Subhotosh Khan
replied to a thread
How do you solve x=1+ω^x+ω^2x
in
Intermediate/Advanced Algebra
x = 1 + w^x + w^(2x) x(1-w^x) = (1- w^x)...... assuming w^x \ne1 x(1-w^x) = ...... given w^3 = -1 x(1-w^x) = we know:
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11 replies | 266 view(s)
12-10-2017,
10:05 AM
Subhotosh Khan
replied to a thread
How do you solve x=1+ω^x+ω^2x
in
Intermediate/Advanced Algebra
Solve for what - x or ω?
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11 replies | 266 view(s)
12-10-2017,
10:03 AM
Subhotosh Khan
replied to a thread
statistics review questions (13 questions; need the answers)
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 | 100 view(s)
12-10-2017,
10:01 AM
Subhotosh Khan
replied to a thread
statistics review questions (13 questions; need the answers)
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...
see more
4 replies | 100 view(s)
12-10-2017,
10:00 AM
Subhotosh Khan
replied to a thread
statistics review questions (13 questions; need the answers)
in
Probability / Statistics
5. In order to investigate the status of the patients with hypertension. The results show that there are 50 patients and 50 healthy people in 100...
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4 replies | 100 view(s)
12-10-2017,
09:58 AM
Subhotosh Khan
replied to a thread
statistics review questions (13 questions; need the answers)
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 start...
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4 replies | 100 view(s)
12-09-2017,
09:03 PM
Subhotosh Khan
replied to a thread
Mind blown - probably missing algebra concept - cannot simplify derivative
in
Calculus
Much easier to apply quotient rule. \frac{d}{dx} \left = \ \dfrac{g'(x)*h(x) - g(x)*h'(x)}{^2} g(x) = x^2 → g'(x) = 2x & h(x) = (x^2 -...
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2 replies | 94 view(s)
12-09-2017,
06:39 PM
Subhotosh Khan
replied to a thread
Day Trading Account Balance Projection Formula
in
Finance/Business Math
What % of your income you would share with us when we supply you this equation?
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4 replies | 107 view(s)
12-09-2017,
05:53 PM
Subhotosh Khan
replied to a thread
Derivatives help for economics (PED using calculus = dQ/dP x P/Q)
in
Calculus
What is PED?
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8 replies | 182 view(s)
12-09-2017,
05:51 PM
Subhotosh Khan
replied to a thread
Expected Difference and Other Stuff (ACT scores for 1,171,460 members of class)
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 | 118 view(s)
12-09-2017,
05:27 PM
Subhotosh Khan
replied to a thread
Need help with puzzle involving boolean
in
Math Odds & Ends
Please copy and paste the problem from the given site - along with your thoughts/work. Most of us are not willing to go into another site in...
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2 replies | 89 view(s)
12-09-2017,
05:25 PM
Subhotosh Khan
replied to a thread
Alternative form of derived function
in
Calculus
I cannot quite understand the problem. Please post the EXACT problem along with your work/thoughts about the problem
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3 replies | 109 view(s)
12-09-2017,
01:11 PM
Subhotosh Khan
replied to a thread
GCSE Mocks Maths Help-Last question
in
Geometry and Trig
No relationship between AF & AP and CD & CQ are given?! Additionally - what is "x"?
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5 replies | 153 view(s)
12-09-2017,
10:22 AM
Subhotosh Khan
replied to a thread
Dsolve Perturbation n'(1-epsilon(u')^2)=-y with mathematica
in
Advanced Math
Most of us do not have access to Mathematica.
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1 replies | 82 view(s)
12-09-2017,
10:20 AM
Subhotosh Khan
replied to a thread
Need help with reversal of a calculation involving gravitational constant.
in
Calculus
Start with - squaring both sides: ^2 \ = \ \dfrac{2GM}{r} and continue...
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1 replies | 57 view(s)
12-08-2017,
09:30 PM
Subhotosh Khan
replied to a thread
Quadratic Equation: Solve 2a^2+4a+5=0 by completing the square
in
Intermediate/Advanced Algebra
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 | 131 view(s)
12-08-2017,
06:12 PM
Subhotosh Khan
replied to a thread
how to get 14846325 using these numbers 167, 167, 88111111, 10, 0813
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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2 replies | 96 view(s)
12-06-2017,
11:51 AM
Subhotosh Khan
replied to a thread
Calculating the result of a 5% growth rate over ten years
in
Finance/Business Math
Have you considered compounded growth? Suppose the growth rate is 10% and you start with $1000. At the end of the first year you would have...
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6 replies | 198 view(s)
12-05-2017,
08:23 AM
Subhotosh Khan
replied to a thread
How to find x and y for this? x^2 + (1-y)^2 + (x-y)^2 = 1/3
in
Intermediate/Advanced Algebra
I know... but I did not misread it. While trying to plot it - I discovered the solution suggested by Peterson. I was hoping OP will discover...
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8 replies | 259 view(s)
12-03-2017,
06:43 PM
Subhotosh Khan
replied to a thread
exact diffrential equation: solve p(x,y) dx +(4y^3 - 6x^3 y) dy=0
in
Differential Equations
What are the characteristics of an exact ODE?
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1 replies | 159 view(s)
12-03-2017,
06:41 PM
Subhotosh Khan
replied to a thread
How to find x and y for this? x^2 + (1-y)^2 + (x-y)^2 = 1/3
in
Intermediate/Advanced Algebra
Easiest way to do this is to plot it!!!
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8 replies | 259 view(s)
12-03-2017,
01:56 PM
Subhotosh Khan
replied to a thread
can you change 10 pints to gallons using the metric system?
in
Beginning Algebra
1 pint = How many liters? 1 liter = how many gallons?
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5 replies | 370 view(s)
12-02-2017,
07:32 PM
Subhotosh Khan
replied to a thread
Sorting integers into 3 equal (almost) groups
in
Advanced Math
What does 3 equal groups mean? The GCD of each group must be equal?
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10 replies | 357 view(s)
12-02-2017,
03:39 PM
Subhotosh Khan
replied to a thread
Combining of 2 Double Integrals into 1: how to convert to polar
in
Calculus
Sketch The Areas of the two double integrals first.
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2 replies | 171 view(s)
12-02-2017,
08:49 AM
Subhotosh Khan
started a thread
Very interesting average - I'm thinking of three numbers whose average is (pi) π.
in
Math Odds & Ends
from https://www.quora.com/Im-thinking-of-three-numbers-whose-average-is-pi-What-are-the-numbers/answer/Alan-Bustany?srid=oNrJ The three numbers...
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0 replies | 131 view(s)
11-30-2017,
10:51 AM
Subhotosh Khan
replied to a thread
Riemann sums: Which sum matches int[from 2 to 6] [1/(1 + x^5)] dx ?
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 | 124 view(s)
11-30-2017,
10:48 AM
Subhotosh Khan
replied to a thread
Inequality Help: x+3/x-1 >= 0, (1-x)(x+2)/x(x+1) > 0
in
Intermediate/Advanced Algebra
I believe your problem (function) is: (x+3)/(x-1) >= 0......................... This function is discontinuous at x = 1 The takes on different...
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6 replies | 247 view(s)
11-30-2017,
10:42 AM
Subhotosh Khan
replied to a thread
Area between two curves: y=2x^(1/3), y=(1/8)x^2, 0<=x<=6
in
Calculus
In your original post you had: y=2x1/3 → y = 2 * x1/3 That is very different from: y = (2x)1/3............... (the form you have used...
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12 replies | 549 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
Yesterday
09:16 PM
Join Date
06-18-2007
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