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Subhotosh Khan
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Subhotosh Khan
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Join Date
06-18-2007
Last Activity
Yesterday
06:14 PM
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Yesterday,
03:28 PM
Subhotosh Khan
replied to a thread
42 km Course, 0.4 km Travelled, How Much Time Has Passed?
in
Pre-Algebra
You did not post the numerical value of Speed ( = S )
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5 replies | 63 view(s)
Yesterday,
03:23 PM
Subhotosh Khan
replied to a thread
Yards, area and squaring.
in
Arithmetic
If the crime scene is 3 city blocks in each direction, then - within the crime scene you can set (3 *3 =) 9 city blocks. So the area would...
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3 replies | 57 view(s)
Yesterday,
12:44 PM
Subhotosh Khan
replied to a thread
42 km Course, 0.4 km Travelled, How Much Time Has Passed?
in
Pre-Algebra
As posted, the question canNOT be answered!
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5 replies | 63 view(s)
03-22-2018,
09:06 AM
Subhotosh Khan
replied to a thread
Model Kit Scale
in
Arithmetic
Problem can be more confusing! Suppose a cube of dimensions 72" x 72" x 72" is modelled with a cube of 1" x 1" x 1" So the volume of the model...
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5 replies | 115 view(s)
03-22-2018,
08:30 AM
Subhotosh Khan
replied to a thread
Simultaneous Equations
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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2 replies | 53 view(s)
03-22-2018,
08:28 AM
Subhotosh Khan
replied to a thread
Vector Parameters Problem
in
Intermediate/Advanced Algebra
Please share with us the work you have done without using vectors.
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3 replies | 64 view(s)
03-22-2018,
08:25 AM
Subhotosh Khan
replied to a thread
Help with vector questions needed!!
in
Calculus
All these problems are from Hibbeler's Statics book. Good problems - try dot product of unit vectors.
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1 replies | 58 view(s)
03-21-2018,
07:18 PM
Subhotosh Khan
replied to a thread
Help with exponential
in
Geometry and Trig
Yes you are close. Now go back to the original problem and expand the RHS of (4).
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8 replies | 130 view(s)
03-21-2018,
02:25 PM
Subhotosh Khan
replied to a thread
Help with exponential
in
Geometry and Trig
Correct Now expand (similarly): \displaystyle{e^{\left (\frac{jw}{2} \ + \ \frac{\pi}{2}\right )}}
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8 replies | 130 view(s)
03-21-2018,
02:02 PM
Subhotosh Khan
replied to a thread
Geometry Trouble
in
Geometry and Trig
From the diagram, do you see that: sin(30°) \ = \dfrac{short}{hypotenuse} ? Do you know the numerical value of sin(30°)?
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4 replies | 95 view(s)
03-21-2018,
01:33 PM
Subhotosh Khan
replied to a thread
Help with exponential
in
Geometry and Trig
Using Euler's formula, can you expand: \displaystyle{e^{\frac{jw}{2}}}
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8 replies | 130 view(s)
03-21-2018,
12:25 PM
Subhotosh Khan
replied to a thread
Help with exponential
in
Geometry and Trig
Did you try to expand the last expression Euler's theorem and DeMoivre' s theorem?
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8 replies | 130 view(s)
03-21-2018,
09:03 AM
Subhotosh Khan
replied to a thread
Exponential graph transformations
in
Intermediate/Advanced Algebra
Do you understand - why the process of transformation from 2^{(x-0)} \to 2^{-(x-0)} involves reflection about the line x=0?
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6 replies | 108 view(s)
03-21-2018,
06:13 AM
Subhotosh Khan
replied to a thread
Exponential graph transformations
in
Intermediate/Advanced Algebra
When you are reflecting about y-axis, you are actually reflecting about the line x=0 For transformation of 2^(x-1) to 2 you will need to reflect...
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6 replies | 108 view(s)
03-20-2018,
07:34 PM
Subhotosh Khan
replied to a thread
Divisibility
in
Intermediate/Advanced Algebra
Thank you LA - I had inferred as much. However, I would have liked the OP to clarify the problem - just see the depth of interest present in...
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6 replies | 126 view(s)
03-20-2018,
01:52 PM
Subhotosh Khan
replied to a thread
Finding Gradient slope
in
Geometry and Trig
How would you define ("in words" and by mathematical equation) "grade" (or % grade), in general?
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1 replies | 53 view(s)
03-20-2018,
12:16 PM
Subhotosh Khan
replied to a thread
Proof of square root of two irrationality
in
Advanced Math
What searches have you conducted and what did you learn from those?
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4 replies | 126 view(s)
03-20-2018,
11:45 AM
Subhotosh Khan
replied to a thread
Cant get the same answer as my lecturer
in
Calculus
I have not worked it out with pencil/paper - but looks like simple algebraic manipulation. Starting with equation (4) - multiply both sides by by...
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1 replies | 60 view(s)
03-20-2018,
11:35 AM
Subhotosh Khan
replied to a thread
Divisibility
in
Intermediate/Advanced Algebra
As posted the problem does not make sense to me. Please check and confirm its completeness and correctness.
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6 replies | 126 view(s)
03-20-2018,
08:39 AM
Subhotosh Khan
replied to a thread
Find a point on an ellipse given major and minor axis
in
Geometry and Trig
I believe you wanted write: \displaystyle{\dfrac{x^2}{a^2} + \dfrac{y^2}{b^2} \ = \ 1} In that case: y = ± b * √(1 - x2/a2) Continue.....
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8 replies | 122 view(s)
03-19-2018,
04:27 PM
Subhotosh Khan
replied to a thread
Difficult System of Equation Problem
in
Intermediate/Advanced Algebra
14 - (x+y) = xy = 48/(x+y) ................. Let x+y = u 48/u = 14 - u u2 - 14u + 48 = 0 u = 6, 8 → x+y = 6 or 8 → xy = 8, 6 x2 + y2 =...
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13 replies | 306 view(s)
03-19-2018,
02:07 PM
Subhotosh Khan
replied to a thread
Sampling distribution problem
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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2 replies | 59 view(s)
03-19-2018,
02:05 PM
Subhotosh Khan
replied to a thread
Finding measures
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 | 74 view(s)
03-18-2018,
09:31 PM
Subhotosh Khan
replied to a thread
solve x for L shaped area
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 | 177 view(s)
03-18-2018,
09:21 PM
Subhotosh Khan
replied to a thread
The Hospital Question
in
Probability / Statistics
How did you calculate that? 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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8 replies | 142 view(s)
03-18-2018,
09:18 PM
Subhotosh Khan
replied to a thread
Triangle congruence
in
Geometry and Trig
Calculate lengths of the corresponding sides - then invoke S_S_S theorem.
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1 replies | 61 view(s)
03-18-2018,
09:14 PM
Subhotosh Khan
replied to a thread
14 month 360/year loan interest
in
Finance/Business Math
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 | 126 view(s)
03-17-2018,
09:26 PM
Subhotosh Khan
replied to a thread
Word problems. I am not sure what level of math the problem is.
in
Arithmetic
Start with the assumption that you have driven for 'T' hours and continue...
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9 replies | 214 view(s)
03-17-2018,
09:21 PM
Subhotosh Khan
replied to a thread
2 equations and 2 unknown seemed easy to solve but not.
in
Intermediate/Advanced Algebra
These are non-linear simultaneous equations. These are two ellipses - which may intersect at 0, 1, 2, 3 or 4 points (solutions). What methods...
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11 replies | 281 view(s)
03-17-2018,
09:13 PM
Subhotosh Khan
replied to a thread
Word problems. I am not sure what level of math the problem is.
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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9 replies | 214 view(s)
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About Subhotosh Khan
Basic Information
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“... mathematics is only the art of saying the same thing in different words” - B. Russell
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17,299
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General Information
Last Activity
Yesterday
06:14 PM
Join Date
06-18-2007
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