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Today,
09:11 PM
Subhotosh Khan
replied to a thread
Proving a Quadrilateral is a Parallelogram: Challenge
in
Geometry and Trig
Draw AB = 10 cm and AC = 10 cm and angle BAC = 60°. Draw BD = 6 cm and CD = 6 cm. Did you get a parallelogram? Do you have two sets of...
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3 replies | 45 view(s)
Today,
07:45 PM
mmm4444bot
replied to a thread
Paul's Online Math Notes
in
Math Odds & Ends
I'm not sure whether that pronoun refers to the PDF file or its content, but what is meant by "scale it to the homework problems"? If you would...
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3 replies | 148 view(s)
Today,
07:39 PM
Denis
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
Already there; that's why I posted: Ahhh shucks......>|_ (that's a corner!)
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10 replies | 127 view(s)
Today,
07:38 PM
yma16
replied to a thread
Visualization Problem: Dots and Lines
in
Geometry and Trig
For example, the following 3 planes intersect each other. They all have a line that pass through the point 1 and 2. So I consider there is an...
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14 replies | 612 view(s)
Today,
07:30 PM
nayminsit
started a thread
the coordinates of the intersection points of segments x1 and x2
in
Geometry and Trig
Questions Calculate the coordinates of the intersection points of segments x1 and x2 with a circle r. To calculate the coordinates of the...
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0 replies | 10 view(s)
Today,
05:52 PM
frank789
replied to a thread
Partial Fractions Concept check
in
Intermediate/Advanced Algebra
as always, thanks for the help
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2 replies | 36 view(s)
Today,
05:52 PM
lookagain
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
Also, there is this: .
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10 replies | 127 view(s)
Today,
05:32 PM
austint
replied to a thread
Proving a Quadrilateral is a Parallelogram: Challenge
in
Geometry and Trig
My diagram consisted of a quadrilateral that consisted of the givens. I then drew a diagonal to split the shape into two triangles. Then, using the...
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3 replies | 45 view(s)
Today,
05:15 PM
Dr.Peterson
replied to a thread
Multiplication
in
Arithmetic
Only #2 and #3 are fully valid. English usage people will say that #1 means the same thing, but is an idiom. Math people don't like saying...
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2 replies | 41 view(s)
Today,
05:08 PM
e_2.718281828
replied to a thread
Trigonometic Limit (tan x)^tan(x + Pi/4)
in
Geometry and Trig
What I mean by this is that for example in lim(x->pi/2) (ln x)/(cos x) = (ln pi/2)/0 (indetermined form) +oo at 0+ -oo at 0-
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6 replies | 215 view(s)
Today,
05:06 PM
Subhotosh Khan
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
I concur. I saw the OP's attempt at the solution (3x + 2y = 1800) and inferred (never assumed) that a rectangle was "suggested" in class.
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10 replies | 127 view(s)
Today,
05:00 PM
JeffM
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
Corner time mon ami. I have no idea why a problem of optimization under constraint is posed in algebra, but constraints may, and usually do,...
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10 replies | 127 view(s)
Today,
04:52 PM
lookagain
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
And to think you were outstanding in your field.
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10 replies | 127 view(s)
Today,
04:50 PM
Denis
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
Ahhh shucks......>|_
see more
10 replies | 127 view(s)
Today,
04:38 PM
lookagain
replied to a thread
Multiplication
in
Arithmetic
Don't try to use the wording in either 1 or 4. See this related material: ...
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2 replies | 41 view(s)
Today,
04:35 PM
tkhunny
replied to a thread
Partial Fractions Concept check
in
Intermediate/Advanced Algebra
This is good thinking. If you were to use ONLY x^2, you would need bx+c. You are just splitting it out ahead of time. \dfrac{bx+c}{x^{2}} =...
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2 replies | 36 view(s)
Today,
04:25 PM
frank789
started a thread
Partial Fractions Concept check
in
Intermediate/Advanced Algebra
Hi all, apologize for my ignorance have a quick question: when I decompose into partial fractions, if I have a single quadratic factor such as...
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2 replies | 36 view(s)
Today,
02:57 PM
Subhotosh Khan
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
That logic will not work here because of the fixed (but variable) cost involved.
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10 replies | 127 view(s)
Today,
02:56 PM
lookagain
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
You can't forget about the shared fence. The solutions don't involve pastures that are square-shaped. That is, the pastures turn out not to be...
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10 replies | 127 view(s)
Today,
02:50 PM
Subhotosh Khan
replied to a thread
Proving a Quadrilateral is a Parallelogram: Challenge
in
Geometry and Trig
Did you draw some figures to investigate? Note that the problem does not mention whether the given congruent sides are adjacent or not! What...
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3 replies | 45 view(s)
Today,
02:48 PM
KWF
started a thread
Multiplication
in
Arithmetic
2 * 1/4 is or equals 1/2 or 2 times 1/4 equals 1/2. Are the following correct to re-word or to express the same calculation? 1. 1/2 is two...
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2 replies | 41 view(s)
Today,
02:07 PM
austint
started a thread
Proving a Quadrilateral is a Parallelogram: Challenge
in
Geometry and Trig
Hello all! I have a challenge problem here regarding how to prove a quadrilateral is a parallelogram. Here it is: Given that a quadrilateral...
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3 replies | 45 view(s)
Today,
01:51 PM
Denis
replied to a thread
High School Level: Fun yet tricky triangle problem with diagram.
in
Geometry and Trig
Further to TK's suggestion: can you show that y^2 - x^2 = 500?
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2 replies | 73 view(s)
Today,
01:50 PM
JeffM
replied to a thread
Combinations/Permutations where only certain elements in series can vary
in
Probability / Statistics
If I understand the problem, you have a sequence of characters. At specific spots in the sequence, a character may be replaced by one other ...
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1 replies | 26 view(s)
Today,
01:50 PM
tkhunny
replied to a thread
Parabolic word problem.
in
Intermediate/Advanced Algebra
I'm certainly familiar with those, but I'm not seeing the application to analytic geometry :-)
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4 replies | 59 view(s)
Today,
01:41 PM
Denis
replied to a thread
Need help understanding these types of problems.
in
Intermediate/Advanced Algebra
Or since a square produces maximum area, you can use side = L, thus perimeter 4L. You can then forget about the shared fence: instead, use 3...
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10 replies | 127 view(s)
Today,
01:31 PM
Denis
replied to a thread
Parabolic word problem.
in
Intermediate/Advanced Algebra
Here you go, TK : https://www.gracegems.org/E/parables.htm
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4 replies | 59 view(s)
Today,
12:49 PM
goliardico
started a thread
verifying definition interval of given differential equation
in
Differential Equations
Hi everyone, I need your help to check the method I followed to solve this given differential equation: I cant actually write powers in LaTex,...
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0 replies | 19 view(s)
Today,
12:38 PM
n00b123
started a thread
Combinations/Permutations where only certain elements in series can vary
in
Probability / Statistics
Hi all, I am sorry if this is posted the wrong sub-forum, but my math knowledge is limited and so I am unsure where else to post. I am...
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1 replies | 26 view(s)
Today,
11:23 AM
j-astron
replied to a thread
Pretty tricky probability "dice" question
in
Probability / Statistics
As I mentioned earlier, you can try to calculate the total probability of losing instead, and take 1 - P(lose). Either way, you have to set up "small...
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18 replies | 1269 view(s)
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