# Activity Stream

• Today, 05:49 AM
Yes! f(x) is y. That is, symbol f(x) is another way of expressing the y variable (called function notation). No, that's my fault. :oops: Post...
5 replies | 113 view(s)
• Today, 05:14 AM
Otis replied to a thread initializing from 0 in Beginning Algebra
The nth index value is n-1 only when the index starts at 0. Were you to start with index 2, instead, you would be starting with a value that is...
4 replies | 47 view(s)
• Today, 04:53 AM
For example if I have 2^3 possibilities, why the indexes from 0-(2^3 -1) will label all 2^3 possibilities? I claim that the last label/index must be...
4 replies | 47 view(s)
• Today, 04:35 AM
firstly thanks for your cooperation ; secondly but I can also labeling the indexes as 2 is the 1st index 3 is the 2nd index 4 is the 3rd index...
4 replies | 47 view(s)
• Today, 04:19 AM
Symbol n tells us how many index numbers we have. (When the index value starts at 1, then the value matches the count. That is, the nth index's value...
4 replies | 47 view(s)
• Today, 04:01 AM
Y = x2 Transforms to By what I understand about transformations, there's 4 main ones: 1. Translation 2. Dilation 3. Reflection 4. Rotation...
0 replies | 16 view(s)
• Today, 03:49 AM
\dfrac{12}{35} \Rightarrow \text{Pretty darn close to }\dfrac 1 3 \text{ but still }\Rightarrow \text{corner}
7 replies | 90 view(s)
• Today, 03:39 AM
Hi guys; I'm a lil confused and sorry if it was simple but I find it hard to understand. lets assume I have n possibilities, which it starts from...
4 replies | 47 view(s)
• Today, 03:34 AM
Ryan$replied to a thread problem help in Beginning Algebra ur explanation straight forward, helped me very much! 4 replies | 101 view(s) • Today, 03:33 AM Ryan$ replied to a thread problem help in Beginning Algebra
thanks ! yup helped me
4 replies | 101 view(s)
• Today, 03:11 AM
I'll handle that. :cool:
27 replies | 402 view(s)
• Today, 03:01 AM
I thought it was a riddle. ;)
7 replies | 90 view(s)
• Today, 02:47 AM
What did you try?
1 replies | 19 view(s)
• Today, 02:25 AM
So what we have here is: \forall x (\exists y F_{xy} \implies \forall y F_{yx}) \exists x \exists y F_{xy} \therefore \forall x \forall y...
1 replies | 31 view(s)
• Today, 02:18 AM
Coordinates of A and B are known and I pick a point C such that AB = AC = BC. I thought it'd be very simple to calculate the coordinates of C, but...
1 replies | 19 view(s)
• Today, 12:46 AM
pka replied to a thread Here's a good problem in Math Odds & Ends
Before retiring I loved to teach combinatorics at a simple level to in service teachers. They need renewal credits and a collection of problems...
7 replies | 90 view(s)
• Today, 12:24 AM
My 1/3 assumes completely at random. Plus 1/3 also solution to all similar cases > 1 couple. Do I get the "corner" again?
7 replies | 90 view(s)
• Today, 12:19 AM
I feel like such an idiot right about now...I just realized I posted that image in a staff area at the other site. D'oh!!! I've posted the image...
27 replies | 402 view(s)
• Today, 12:15 AM
Sorry for the late reply, so when you say f(11)=75 does that mean I need my y value to equal 75 if I was to plug in a number for x (like in the...
5 replies | 113 view(s)
• Today, 12:00 AM
I agree that \cos(x)^2 is at least a little ambiguous, and therefore risky to use, especially with inexperienced readers. In a context where one...
12 replies | 152 view(s)
• Yesterday, 11:53 PM
No, I claim it is not consistent function notation for the exponentiation of trig functions to begin with.
12 replies | 152 view(s)
• Yesterday, 11:48 PM
Metronome replied to a thread Vectors as Inputs in Calculus
Thanks for adding this perspective. I thought some of what he said sounded too restrictive. By the way, isn't your final claim circular, since the...
2 replies | 49 view(s)
• Yesterday, 11:21 PM
Assignment with proper questions: https://ibb.co/nBwmcRf My work on grid paper: https://ibb.co/2nc20Tp I graphed the sin function with the proper...
3 replies | 34 view(s)
• Yesterday, 11:14 PM
Did you see posts #7, #8 and #9? :-?
10 replies | 90 view(s)
• Yesterday, 11:10 PM
I don't understand your statement (followed by question marks). Do you have a value for x?
12 replies | 152 view(s)
• Yesterday, 11:08 PM
It's not ambiguous, for folks who understand function notation. Is your position that it shouldn't be used because you think a majority of people do...
12 replies | 152 view(s)
• Yesterday, 11:02 PM
but, should it not be m2-3m + 3 and so (m-3/2)2 +3/4 >= 0?
10 replies | 90 view(s)
• Yesterday, 11:01 PM
The former is poor form if it is intended to be equivalent for the square of the cosine of x, because it has ambiguous style. It should not be...
12 replies | 152 view(s)
• Yesterday, 10:56 PM
It isn't. Some of the replies contain a mistake. At the end of post #4, Dr. Peterson gives you some suggestions on how to show that for all Real...
10 replies | 90 view(s)
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