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Subhotosh Khan
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Subhotosh Khan
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Join Date
06-18-2007
Last Activity
Yesterday
09:42 PM
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Yesterday,
09:37 PM
Subhotosh Khan
replied to a thread
velocity function help
in
Calculus
So you are trying derive an expression for velocity - while you are given the position as a function of time. How was it explained in your class...
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4 replies | 34 view(s)
Yesterday,
08:07 PM
Subhotosh Khan
replied to a thread
velocity function help
in
Calculus
Do you know how to differentiate using calculus?
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4 replies | 34 view(s)
Yesterday,
03:31 PM
Subhotosh Khan
replied to a thread
Why is the sum of (nCk)*(mCr-k) equal to (m+n)Cr?
in
Intermediate/Advanced Algebra
Actually the question is to prove: \displaystyle{\sum_{k=0}^r \left = (n+m)C_r} Go to http://mathforum.org/library/drmath/view/54223.html ...
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8 replies | 89 view(s)
09-21-2018,
08:40 PM
Subhotosh Khan
replied to a thread
what is wrong here
in
Intermediate/Advanced Algebra
x3 + 5x2 - 6x = x * (x2 + 5x - 6) = x * (x + 6) * (x - 1) ..... continue....
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8 replies | 89 view(s)
09-21-2018,
12:06 PM
Subhotosh Khan
replied to a thread
Calculate a side in a non-right angled trangle
in
Geometry and Trig
Use law of Cosines. If you are still stuck, reply back showing work.
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5 replies | 78 view(s)
09-21-2018,
09:44 AM
Subhotosh Khan
replied to a thread
Calculate a side in a non-right angled trangle
in
Geometry and Trig
If the vertices of the triangle are A, B & C,: Can you describe which sides are 9 cm? Do you know laws Sines and Cosines for triangles?
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5 replies | 78 view(s)
09-21-2018,
06:38 AM
Subhotosh Khan
replied to a thread
Upper Sums - Generalized expression in terms of "n" - (est. of area under curve)
in
Calculus
Sequences like: 1, 4, 7, 10, ..... Or a, a + d, a + 2d, a + 3d ...... are said to be in Arithmetic Progression (AP) with constant...
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7 replies | 159 view(s)
09-20-2018,
05:00 PM
Subhotosh Khan
replied to a thread
Logarithm
in
Pre-Algebra
log(H) does NOT mean log (multiplied by) (H) Before that can you please tell us: what does the statement 3^(4) = 81
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4 replies | 113 view(s)
09-19-2018,
10:50 AM
Subhotosh Khan
replied to a thread
Halpppp my crush needs help halp your boii plzz
in
Calculus
What did you get? Did you factor 'n' out? What did you get from that?
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5 replies | 154 view(s)
09-19-2018,
08:42 AM
Subhotosh Khan
replied to a thread
Halpppp my crush needs help halp your boii plzz
in
Calculus
Hint: Factor out n from the expression. Then factor out (n-1) from the resulting polynomial. Please share your work with us ...even if you know...
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5 replies | 154 view(s)
09-17-2018,
05:21 PM
Subhotosh Khan
replied to a thread
Area of a sector of a circle (shaded portion)
in
Calculus
Now you need to subtract the area of the triangle to calculate the "pink" area.
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6 replies | 88 view(s)
09-17-2018,
08:17 AM
Subhotosh Khan
replied to a thread
Trigonometry question: prove that 1/sin(10°) = -2 + 8cos2(10°)
in
Geometry and Trig
Calculator? .... just kidding What are your thoughts? Can you express sin(x) in terms of cos(x)?
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2 replies | 64 view(s)
09-16-2018,
03:37 PM
Subhotosh Khan
replied to a thread
Right Triangle or not? How to put in an eqn? vertices A(4, 3), B(-6, 2), C(-5, 7)
in
Intermediate/Advanced Algebra
Calculate the lengths of AB, BC and CA - then use Pythagoras's theorem to check for right angle. What is the total score of the student now? ...
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3 replies | 89 view(s)
09-15-2018,
04:01 PM
Subhotosh Khan
replied to a thread
Is the number of diameter divided by the number of chords is a fixed number?
in
Geometry and Trig
By that - are you referring to the LENGTH of the diameter? By that - are you referring to the LENGTH of the chord?
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7 replies | 133 view(s)
09-15-2018,
01:35 PM
Subhotosh Khan
replied to a thread
what's cyclically ordered set? Are solid bodies have cyclically ordered set of point?
in
Geometry and Trig
Polygons are 2-D structure. Solid bodies are 3-D structure.
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5 replies | 99 view(s)
09-15-2018,
01:30 PM
Subhotosh Khan
replied to a thread
what's cyclically ordered set? Are solid bodies have cyclically ordered set of point?
in
Geometry and Trig
A closed polygon should have cyclic order by definition of being closed.
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5 replies | 99 view(s)
09-15-2018,
01:27 PM
Subhotosh Khan
replied to a thread
how can I do this on Casio fx-85GT plus?
in
Calculus
Take "log" of both sides and continue. If you are still stuck, please reply back with your work from my suggestion.
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6 replies | 122 view(s)
09-15-2018,
10:06 AM
Subhotosh Khan
replied to a thread
find x and y so x^2 + y^2 = 2 would be correct
in
Intermediate/Advanced Algebra
There are infinite possible solution for this equation! Did you post the complete problem?
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5 replies | 145 view(s)
09-15-2018,
09:50 AM
Subhotosh Khan
replied to a thread
Determine Elementary Fcn for sum[1,infty](n a_n x^{n-1}) - sum[1,infty](a_n x^n) = 0
in
Differential Equations
If I were to do this problem, I would write out the first few terms (~4) for each series and observe if any grouping or elimination is possible.
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2 replies | 158 view(s)
09-15-2018,
09:15 AM
Subhotosh Khan
replied to a thread
Solving equations with fractions: 2x/(x+6) + 1/(x-1) = 2
in
Intermediate/Advanced Algebra
From your attempt I am assuming the actual equation is: 2x/(x+6) + 1/(x-1) = 2..................... those parentheses are super important to make...
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2 replies | 71 view(s)
09-14-2018,
11:39 AM
Subhotosh Khan
replied to a thread
Find the equation of the line through (3,7); parallel to 3x-y=1.
in
Beginning Algebra
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 with the definitions. ...
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4 replies | 147 view(s)
09-12-2018,
04:19 AM
Subhotosh Khan
replied to a thread
How to determine which of 0.470, 0.47, and 0.4 is the largest?
in
Arithmetic
One of the ways one can determine - which number is bigger between two - is to use subtraction. Can you subtract decimal numbers?
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21 replies | 488 view(s)
09-11-2018,
12:03 PM
Subhotosh Khan
replied to a thread
Dont know where to start: 15.2/sinsin51 = y/sinsin67 = z/sinsin62
in
Intermediate/Advanced Algebra
This is fairly simple ratio problem - where are you stuck? Please share your work/thoughts with us - so that we know where to start.
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2 replies | 107 view(s)
09-09-2018,
06:18 PM
Subhotosh Khan
replied to a thread
(Graph Theory) Minimum possible number of friendships
in
Advanced Math
How many - total - friend requests were produced?
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1 replies | 52 view(s)
09-08-2018,
12:09 PM
Subhotosh Khan
replied to a thread
Analysis of difference of products: If I budget 5 resources, w/ rate of $100/unit...
in
Calculus
That will be dictated by your production system - every system will have different combination of multipliers (weighting factors). Your...
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10 replies | 358 view(s)
09-07-2018,
07:20 PM
Subhotosh Khan
replied to a thread
Graphing Piecewise Function: f ( x ) = {3 if x ≤ -2 {-x + 1 if -2 < x ≤ 1 {1 if x > 1
in
Intermediate/Advanced Algebra
Can you graph: f(x) = 3
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1 replies | 101 view(s)
09-07-2018,
01:37 PM
Subhotosh Khan
replied to a thread
What will be the graph if x=t and x=t˛?
in
Geometry and Trig
Yes you are correct on both counts - as far as "what you have posted".
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6 replies | 254 view(s)
09-07-2018,
11:22 AM
Subhotosh Khan
replied to a thread
Why complex = real in this case
in
Intermediate/Advanced Algebra
Complex number - according to my definition - can be expressed as "a + i * b" , where: i = sqrt and a = any real number (no imaginary part)...
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7 replies | 201 view(s)
09-06-2018,
07:36 AM
Subhotosh Khan
started a thread
Colonial Cricket Conversation
in
Math Odds & Ends
That was a "sixer" for sure!! Denis, I got another ally here!!!
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2 replies | 70 view(s)
09-06-2018,
07:17 AM
Subhotosh Khan
replied to a thread
Zero Discussion
in
Math Odds & Ends
However: An "even" number with "even" exponent will result in "even" number. 2^0 = 1 ........ Now what??
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24 replies | 704 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
09:42 PM
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06-18-2007
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