Register
Help
Remember Me?
What's New?
Activity Stream
New Posts
New Events
Mark Forums Read
Forum
Math Lessons by Subject
Calculators/Solvers
Advanced Search
Home
Activity Stream
If this is your first visit, be sure to check out the
FAQ
by clicking the link above. You may have to
register
before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.
Activity Stream
Filter
Sort By
Time
Show
Recent
Recent
Popular
Popular
Anytime
Anytime
Last 7 Days
Last 7 Days
Last 30 Days
Last 30 Days
All
All
Photos
Photos
Forum
Forums
Filter by:
Forums
Clear All
New Activity (
)
Please reload this page to view the 200+ new activity items that have been created.
Older Activity
Today,
05:50 AM
yhpigs
started a thread
Turning points
in
Calculus
Hello everyone! The equation that I'm sketching a graph for is: y = (x+3)(x+2)(x-1) at -4.5 ≤ x ≤ 4.5 I've already found x and y intercepts,...
see more
0 replies | 3 view(s)
Today,
05:04 AM
Simonsky
replied to a thread
Using quadratic equation to find diameter of base of cylinder
in
Intermediate/Advanced Algebra
Thanks. For some reason I didn't think of the Coefficient as the integer x Pi. Yet again an example of how I notice my thinking is very rigid and...
see more
4 replies | 65 view(s)
Today,
04:26 AM
mmm4444bot
replied to a thread
Need help writing a universal equation involving time and stepping rates.
in
Finance/Business Math
Just got back from lunch; waitress was nice and gave me paper. This flow chart (based on my memory, at a restaurant) shows the sort of yes/no...
see more
17 replies | 458 view(s)
Yesterday,
11:24 PM
Dr.Peterson
replied to a thread
Using quadratic equation to find diameter of base of cylinder
in
Intermediate/Advanced Algebra
That would be the lateral surface area. Simonsky is using the total surface area of a closed cylinder (that is, including both ends).
see more
4 replies | 65 view(s)
Yesterday,
11:11 PM
mmm4444bot
replied to a thread
Need help writing a universal equation involving time and stepping rates.
in
Finance/Business Math
I don't find any mention of this 5-minute grace period. You indicated no grace period, in scenario #1, where a man parked and was charged $7...
see more
17 replies | 458 view(s)
Yesterday,
10:39 PM
robbiemcleod56
replied to a thread
Need help writing a universal equation involving time and stepping rates.
in
Finance/Business Math
It would be $8. The extra minute on each end is under the 5 minute threshold. The change at 7PM wouldn’t matter as well, the 2 hour threshold would...
see more
17 replies | 458 view(s)
Yesterday,
10:16 PM
mmm4444bot
replied to a thread
Need help writing a universal equation involving time and stepping rates.
in
Finance/Business Math
Thanks for clarifying. Scenario #2 06:59 Man IN 11:01 Man OUT Breakdown:
see more
17 replies | 458 view(s)
Yesterday,
09:11 PM
yma16
replied to a thread
help with area of triangle #1
in
Geometry and Trig
I did not read it correctly.
see more
6 replies | 151 view(s)
Yesterday,
09:04 PM
gadelke
replied to a thread
Continuous growth
in
Calculus
Thank you for your response. I think I understand most of it, except for \mu_a= C_a. What is C_a? I understand that we are trying to solve for the...
see more
2 replies | 73 view(s)
Yesterday,
08:49 PM
sinx
replied to a thread
Using quadratic equation to find diameter of base of cylinder
in
Intermediate/Advanced Algebra
if i read the problem correctly, the surface area of a cylinder should be circumference x ht; i.e. surface area = 2(pi)R x ht. or/ surface area...
see more
4 replies | 65 view(s)
Yesterday,
06:11 PM
mmm4444bot
replied to a thread
Algebra: quick explanation needed :)
in
Intermediate/Advanced Algebra
You didn't explain why you're confused, so we have to guess. It seems like you're asking how they did the first step, not the second. (The second...
see more
3 replies | 67 view(s)
Yesterday,
05:41 PM
HallsofIvy
replied to a thread
Algebra: quick explanation needed :)
in
Intermediate/Advanced Algebra
Do you mean from \frac{x(1- 2x)^{-3/2}+ (1- 2x)^{-1/2}}{1- x} to (1- 2x)^{-3/2}\frac{x+ }{1- x}? It says "factor out the power of 1- 2x to the...
see more
3 replies | 67 view(s)
Yesterday,
04:53 PM
Subhotosh Khan
replied to a thread
Algebra: quick explanation needed :)
in
Intermediate/Advanced Algebra
I'll do a similar problem. Do we see that we can write: x * y + y3 ............Factoring out 'y' we get = y * (x + y2)
see more
3 replies | 67 view(s)
Yesterday,
03:53 PM
robbiemcleod56
replied to a thread
Need help writing a universal equation involving time and stepping rates.
in
Finance/Business Math
Yes, it’s 4 hours, not 8 hours.
see more
17 replies | 458 view(s)
Yesterday,
03:45 PM
uffechristian
started a thread
Algebra: quick explanation needed :)
in
Intermediate/Advanced Algebra
Please tell me how they went from first step to second step. thanks in advance.
see more
3 replies | 67 view(s)
Yesterday,
02:14 PM
Dr.Peterson
replied to a thread
Using quadratic equation to find diameter of base of cylinder
in
Intermediate/Advanced Algebra
You're right -- that isn't valid. That is, replacing pi r with x will not eliminate all pi's from the equation. So I would leave it as it is, using...
see more
4 replies | 65 view(s)
Yesterday,
01:54 PM
Simonsky
started a thread
Using quadratic equation to find diameter of base of cylinder
in
Intermediate/Advanced Algebra
The question: The height of a closed cylinder is 5cm and its surface area is 100cm^2 Find the diameter of the base of the cylinder. What...
see more
4 replies | 65 view(s)
Yesterday,
12:58 PM
HallsofIvy
replied to a thread
Continuous growth
in
Calculus
From \frac{d\mu_t}{dt}= \lambda(1+\mu_t) (since there is, in this problem, only one independent variable, t, we don't need the \partial), we have...
see more
2 replies | 73 view(s)
Yesterday,
12:37 PM
Subhotosh Khan
replied to a thread
Modeling the length of a plank as a function of an indicated angle
in
Intermediate/Advanced Algebra
Assume that the plank touches the wall at W the plank touches the ground at G The length of the plank = L The wall touches the ground at...
see more
8 replies | 139 view(s)
Yesterday,
09:38 AM
gadelke
started a thread
Continuous growth
in
Calculus
I think this might be an exponential growth question but I'm not sure how to go about solving it? Suppose I have some continuous time law of...
see more
2 replies | 73 view(s)
Yesterday,
09:27 AM
Denis
replied to a thread
Search crypt
in
Math Odds & Ends
CORRECT! I goofed: should have stated 1 e :???: A thousand apologies of which you may have one:rolleyes: PR0 = for, BED = foundation
see more
2 replies | 60 view(s)
Yesterday,
09:00 AM
Dr.Peterson
replied to a thread
help with area of triangle #1
in
Geometry and Trig
No, a is a length (meters) and A is an area (square meters), so they can't be compared. You are misreading the problem. But otherwise, you are...
see more
6 replies | 151 view(s)
Yesterday,
08:31 AM
mmm4444bot
replied to a thread
Search crypt
in
Math Odds & Ends
:idea: I found an answer with one e. Same as this: Outfit in police department examined (6)
see more
2 replies | 60 view(s)
Yesterday,
07:33 AM
HallsofIvy
replied to a thread
Determine if vector is in span of other vectors
in
Intermediate/Advanced Algebra
"w is in the span of u and v" if and only if there exist numbers, a and b, such that w= au+ bv. In this case, u = (3;-7; 2), v = (-1; 1; 3) and w =...
see more
1 replies | 49 view(s)
Yesterday,
07:32 AM
calvingloster
replied to a thread
Multi-Variable chain rule
in
Calculus
Here is a better picture i hope
see more
3 replies | 90 view(s)
Yesterday,
06:03 AM
mmm4444bot
replied to a thread
Drinking Crypt?
in
Math Odds & Ends
Hints 1: e 1: indicator
see more
1 replies | 70 view(s)
Yesterday,
06:02 AM
mmm4444bot
replied to a thread
Outback Crypt?
in
Math Odds & Ends
Hints 1: e 1: indicator
see more
1 replies | 60 view(s)
Yesterday,
06:00 AM
mmm4444bot
replied to a thread
Mechanical Crypt?
in
Math Odds & Ends
Hints 1: e 1: indicator
see more
1 replies | 50 view(s)
More Activity
No More Results
No Recent Activity