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Today,
04:28 PM
lev888
replied to a thread
what am I doing wrong here
in
Intermediate/Advanced Algebra
I don't quite follow your calculations and don't understand your notation. Are you familiar with vector operations?
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2 replies | 16 view(s)
Today,
04:25 PM
JeffM
replied to a thread
what am I doing wrong here
in
Intermediate/Advanced Algebra
So the equation of the line formed by (-1, -2) and (4, -1) derives from \dfrac{y - (-\ 2)}{x - (-\ 1)} = \dfrac{-\ 2 - (-\ 1)}{-\ 1 - 4}. Why? ...
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2 replies | 16 view(s)
Today,
03:35 PM
allegansveritatem
started a thread
what am I doing wrong here
in
Intermediate/Advanced Algebra
The line (-2,y) (-4,4) is perpendicular to the line (-1,-2) (4,-1). What is y? Here is how I have been attempting to work this out: y-4/-2-(-4)...
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2 replies | 16 view(s)
Today,
01:58 PM
Dr.Peterson
replied to a thread
F(x)=(ax+b)/(cx+d) related to f(x) = 1/x
in
Calculus
Yes, since you have an improper fraction, you can simplify (in a sense) by dividing the numerator by the denominator. The result, as Subhotosh Khan...
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4 replies | 60 view(s)
Today,
01:53 PM
Dr.Peterson
replied to a thread
Please help me understand the concept.
in
Calculus
Take a look at the pictures here (after Definition 1): Paul's Online Math Notes. What you see there is that as you move from left to right on a...
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1 replies | 25 view(s)
Today,
01:27 PM
dbergloev
replied to a thread
Turning Point
in
Geometry and Trig
Thanks a lot, this helped. This was really bothering me because I knew that the solution was simple, I just could not quite figure it out.
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5 replies | 111 view(s)
Today,
01:20 PM
Subhotosh Khan
replied to a thread
F(x)=(ax+b)/(cx+d) related to f(x) = 1/x
in
Calculus
Hint: \displaystyle{ax + b \ = \frac{a}{c}*{(cx+d)} \ + \ (b - \ \frac{da}{c})} ... from long division
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4 replies | 60 view(s)
Today,
01:14 PM
Indranil
started a thread
Please help me understand the concept.
in
Calculus
1. If the graph is concave (curved upward), the slope is increasing. 2. If the graph is concave downward (curved downward), the slope is...
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1 replies | 25 view(s)
Today,
12:58 PM
dalton_holt
replied to a thread
F(x)=(ax+b)/(cx+d) related to f(x) = 1/x
in
Calculus
Thank you for your idea, but I'm not tracking how long division applies. I'm trying to envision how 1/x applies to (ax+b)/(cx+d). Is the suggestion...
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4 replies | 60 view(s)
Today,
11:18 AM
tkhunny
replied to a thread
Having problems with evaluating the limit of the function
in
Calculus
Have you considered exploring e^{f(x)}? Note "x goes to positive infinity" is a very awkward statement. Infinity isn't a place. Try something...
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1 replies | 29 view(s)
Today,
11:12 AM
tkhunny
replied to a thread
F(x)=(ax+b)/(cx+d) related to f(x) = 1/x
in
Calculus
Have you considered Long Division?
see more
4 replies | 60 view(s)
Today,
10:37 AM
Dr.Peterson
replied to a thread
Turning Point
in
Geometry and Trig
Evidently this is not for a class, so I can just point you to the answer rather than giving hints on what theorems to use. See this page, and let...
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5 replies | 111 view(s)
Today,
10:10 AM
bgstudent123
started a thread
Having problems with evaluating the limit of the function
in
Calculus
Hey everybody! I need to find the limit of the following function as x goes to positive infinity. The function is: f (x) = third root of (x^3...
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1 replies | 29 view(s)
Today,
09:32 AM
dalton_holt
started a thread
F(x)=(ax+b)/(cx+d) related to f(x) = 1/x
in
Calculus
I am struggling with a an extra credit problem, and I was hoping to get some guidance. I've done alot of research and can't come up with anything....
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4 replies | 60 view(s)
Today,
08:21 AM
Subhotosh Khan
replied to a thread
Vectors
in
Pre-Algebra
Forces are vectors. Those need to have three characteristic properties, when applied to a body. Those are: Magnitude Direction and point of...
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1 replies | 52 view(s)
Today,
08:16 AM
Subhotosh Khan
replied to a thread
Transversal Challenge problem
in
Geometry and Trig
Was there a figure associated with this problem where the relative positions of the angles (1 - 5) are defined? If there is such a figure, please...
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1 replies | 51 view(s)
Today,
06:58 AM
NAC54321
started a thread
Vectors
in
Pre-Algebra
Having great difficulty in the following problem: Magnitude of the 3 forces acing on a stable object A = 800kN B = 650kN C = ? What is...
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1 replies | 52 view(s)
Today,
12:37 AM
austint
replied to a thread
Proving a Quadrilateral is a Parallelogram: Challenge
in
Geometry and Trig
I have two sets of congruent sides (AB = AC and BD = CD). I drew diagonal CB and proved that triangle CAB is equiangular. Therefore, since angles BCD...
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4 replies | 124 view(s)
Yesterday,
11:50 PM
jlerig
started a thread
Transversal Challenge problem
in
Geometry and Trig
Hey, so I have the above problem and I am at a loss of how to finish solving the problem. I am supposed to identify all the values of the numbered...
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1 replies | 51 view(s)
Yesterday,
09:42 PM
tkhunny
replied to a thread
Finding
in
Calculus
If you REALLY want it AT x = 0, you probably should pick a function that exists at x = 0. On the other hand, it doesn't really need to exist, it...
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1 replies | 55 view(s)
Yesterday,
07:35 PM
EmmettC
started a thread
Finding
in
Calculus
I have an equation of a negative power function form: y = 15x^-0.5 Question 1: How can I calculate the area under the curve from x = 0 to x =...
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1 replies | 55 view(s)
Yesterday,
06:28 PM
Dr.Peterson
replied to a thread
Out sick, have to self teach
in
Geometry and Trig
While I wait for details from you so we can know what difficulties you are having, I might as well add a couple suggestions. Problem 11 at the top...
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2 replies | 80 view(s)
Yesterday,
05:24 PM
Alfredo Dawlabany
started a thread
Inner product on [tex]\mathbb{R}^n[/tex]
in
Intermediate/Advanced Algebra
I am confused about the definition of the inner product -is it : P:\mathbb{R}^n\times \mathbb{R}^n\rightarrow \mathbb{R} -or: P:\mathbb{R}^n\times...
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0 replies | 63 view(s)
Yesterday,
04:55 PM
dbergloev
replied to a thread
Turning Point
in
Geometry and Trig
Center of rotation is properly the correct phrase for it. And a table is a great example, it's actually what this is for. Have a brother who want's...
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5 replies | 111 view(s)
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