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Subhotosh Khan
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Subhotosh Khan
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Join Date
06-18-2007
Last Activity
Today
01:15 PM
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Today,
01:07 PM
Subhotosh Khan
replied to a thread
Transformations: Let f(x)=a(x-p)^2+q be a quadratic function, where....
in
Intermediate/Advanced Algebra
What are the differences between f(x) and F(x) ?
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2 replies | 25 view(s)
Today,
01:00 PM
Subhotosh Khan
replied to a thread
lateral surface area of pentagonal prism; base-edge lengths, height of right prism;
in
Geometry and Trig
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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3 replies | 34 view(s)
Yesterday,
01:01 PM
Subhotosh Khan
replied to a thread
Logic Q's: "Beatrice ate 2/3 as many cakes as Annabel would have eaten...."
in
Math Odds & Ends
Nine cupcakes! .... in one sitting!!!
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4 replies | 143 view(s)
Yesterday,
09:00 AM
Subhotosh Khan
replied to a thread
Finding Equation of plane: (x-1)/-3 = (y-3)/2 = (z+2)/1, w/ point (0,7,-7)
in
Geometry and Trig
There are multiple ways to do perform this task. I would do the following way: Find a point (P) on the given line. Find the equation of the...
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5 replies | 121 view(s)
04-18-2018,
02:07 PM
Subhotosh Khan
replied to a thread
Find values of b so that t^(2)+bt+81=0 has one real solution
in
Beginning Algebra
This is a quadratic equation! How many real solutions can it have? What will be the condition under which it will have ONE real solution?
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3 replies | 87 view(s)
04-18-2018,
09:51 AM
Subhotosh Khan
replied to a thread
Stuck - how to use formula to calculate Marginal costs/ learning curve
in
Finance/Business Math
Did you perform the first task as described in the problem: Assume first that the progress ratio in this industry is 80%. We can then derive the...
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1 replies | 63 view(s)
04-18-2018,
09:47 AM
Subhotosh Khan
replied to a thread
Please help me understand how this works: sqrt[sqrt[sqrt[sqrt[2]]]]=2^x
in
Beginning Algebra
Exactly which step you don't understand? The first step was to re-write the inner-most √2 as 2½ and continue re-writing from there!
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2 replies | 95 view(s)
04-17-2018,
06:38 PM
Subhotosh Khan
replied to a thread
Polar Coordinates: Writing x^2+y^2+5x=0, x^2(x^2+y^2)=7y^2 as Values of R
in
Geometry and Trig
For problem (1) - rewrite as: (x + 5/2)2 + y2 = (5/2)2 Continue.......
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6 replies | 165 view(s)
04-16-2018,
07:56 PM
Subhotosh Khan
replied to a thread
triangle and trapeze problem pls help
in
Geometry and Trig
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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3 replies | 112 view(s)
04-16-2018,
09:03 AM
Subhotosh Khan
replied to a thread
Cumulative frequency distribution of past record to calculate estimated P
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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3 replies | 72 view(s)
04-16-2018,
09:02 AM
Subhotosh Khan
replied to a thread
Trajectory problem: Given a 3-dimensional rectangular solid sitting on the earth...
in
Geometry and Trig
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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1 replies | 49 view(s)
04-15-2018,
04:44 PM
Subhotosh Khan
replied to a thread
Need help w/ trigonometry problem: x pos., acute, cos(x)= a, then tan(x)=...?
in
Geometry and Trig
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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3 replies | 106 view(s)
04-15-2018,
02:22 PM
Subhotosh Khan
replied to a thread
Trouble finding particular soln to this diff eqn: y''(x) + (nπa/l)2 y(x) = Asin(x/l)
in
Differential Equations
Then you have already obtained the homogeneous solution? Can you please tell us what did you get?
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4 replies | 183 view(s)
04-14-2018,
02:59 PM
Subhotosh Khan
replied to a thread
Perimeter Q: A right-angled triangle has its two perpendicular sides in the ratio 5:1
in
Geometry and Trig
Assume the perpendicular sides are 'b' and 'p', Then what is the area of the triangle as a function of 'b' & 'p'? Using Pythagoras's...
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1 replies | 63 view(s)
04-14-2018,
02:55 PM
Subhotosh Khan
replied to a thread
Angles of Elevation: 173 metres from the base of the Eiffel Tower
in
Geometry and Trig
First draw a sketch of the "situation" (assume your height is insignificant compared to that of the Eiffel tower)
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2 replies | 97 view(s)
04-13-2018,
02:29 PM
Subhotosh Khan
replied to a thread
Stumped by a story problem: "A candy maker makes two sizes of candies...."
in
Beginning Algebra
Assume: L = # of jars containing large candies S = # of jars containing small candies What equations and constraints can you write using...
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3 replies | 97 view(s)
04-13-2018,
02:25 PM
Subhotosh Khan
replied to a poll
TI-84 plus help (factoring polynomials)
in
Calculator Questions
If the previous answer does not guide you to correct path go to TI-84 users forum.
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17 replies | 173 view(s)
04-12-2018,
05:40 PM
Subhotosh Khan
replied to a thread
I need an equation: I have the weights of two ingredients...
in
Beginning Algebra
What are "r" & "i"? Please describe.
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5 replies | 180 view(s)
04-11-2018,
08:29 AM
Subhotosh Khan
replied to a thread
problem finding the exponent x in equation 0.920301^x + 0.17414^x = 1
in
Intermediate/Advanced Algebra
Does your equation look like this: \displaystyle{0.920301^x \ + \ 0.17414^x \ = \ 1} If that is correct - then the proper way to write that...
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4 replies | 225 view(s)
04-09-2018,
02:37 PM
Subhotosh Khan
replied to a thread
Combinations or Perumations? I have 27 arrows and a bow and 10 targets to shoot at.
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)
04-09-2018,
08:32 AM
Subhotosh Khan
replied to a thread
Simultaneous Equations: hg+hm=14000 13760-(0.1xhg+17.9x0.052xhm)=5000
in
Intermediate/Advanced Algebra
hg+hm=14000 hm=14000 - hg ..............................................(3) Now substitute hm in (2) using (3). Continue.......
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6 replies | 196 view(s)
04-09-2018,
08:29 AM
Subhotosh Khan
replied to a thread
Find all values of theta in the interval [0 degrees,360 degrees)that satisfy the equa
in
Geometry and Trig
Calculate the solutions in radians - then convert those (answers) to degrees. Is that acceptable?
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2 replies | 57 view(s)
04-08-2018,
01:12 PM
Subhotosh Khan
replied to a thread
Nothing like little Sunday morning series action! x s.t. sum{0,inf}x^(n)/n! converges
in
Calculus
Look at the Taylor series expansion of e^x around x=0
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4 replies | 161 view(s)
04-08-2018,
07:07 AM
Subhotosh Khan
replied to a thread
congruence triangle problem
in
Geometry and Trig
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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6 replies | 188 view(s)
04-07-2018,
01:51 PM
Subhotosh Khan
replied to a thread
Bulk Density and Spherical Packing (need to increase weight of fixed-volume cylinder)
in
Geometry and Trig
That old adage is specially true when you are looking for free work from volunteers. And that is why we encourage our students to do things...
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10 replies | 377 view(s)
04-07-2018,
11:21 AM
Subhotosh Khan
replied to a thread
Is there any way to get 17 as answer to following question!!!😎
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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5 replies | 293 view(s)
04-07-2018,
07:23 AM
Subhotosh Khan
replied to a thread
Bulk Density and Spherical Packing (need to increase weight of fixed-volume cylinder)
in
Geometry and Trig
A BIG assumption in that 64-74% rule is that the size of the spheres (diameters) is constant. If you uses spheres with a distribution of sizes in the...
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10 replies | 377 view(s)
04-06-2018,
04:49 PM
Subhotosh Khan
replied to a thread
Percentages: Ellie bought scarf, dress; scarf cost £4; sold both for total of £26...
in
Arithmetic
What was the total cost of two items? What was the cost of the dress? Now calculate percentage profit for the dress.
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6 replies | 244 view(s)
04-06-2018,
04:46 PM
Subhotosh Khan
replied to a thread
Rectangle, 16cm by 6cm, is inside Semicircle... Find shaded area.
in
Geometry and Trig
You need to show us a sketch! I cannot see how can two points on a line touch a semi-circle?
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8 replies | 195 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
Today
01:15 PM
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06-18-2007
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