As I understand it you want to solve the equation
(A B) B-1 \left(\begin{matrix}x\\8\end{matrix}\right)\, =\,
A (B B^{-1}) \left(\begin{matrix}x\\8\end{matrix}\right)\, =\,
A ...
Type: Posts; User: Ishuda
As I understand it you want to solve the equation
(A B) B-1 \left(\begin{matrix}x\\8\end{matrix}\right)\, =\,
A (B B^{-1}) \left(\begin{matrix}x\\8\end{matrix}\right)\, =\,
A ...
Start with
\displaystyle \int_\alpha^\beta\, [cos(\beta)\, - cos(\theta)]\, sin(\theta)\, cos(\theta)\,d\theta
. . .\displaystyle =\, cos(\beta)\,\int_\alpha^\beta\, sin(\theta)\,...
The first place you might start is the separation of variables method, see for example ...
As Dr.Peterson indicated, using units can sometimes make life easier when transforming from one system of units to another. For example, to convert a distance formula from metric [m=meters] to US...
If you want exact wording, you can try the [c o d e] [/ c o d e ] tag pair (without the spaces of course)
MD MD
or the \text tag in LaTex
\text{MD MD}
It sounds like you knew all of this...
Just what is the equation?
y = 14\, log_2[(8x-56)*16]\, -\, 12
or what? If that is the equation, what is log(a*b) and 16 = 2?
The problem is not the incorporation of constants but the integration and the particular assumption of separability. Ignoring this problem for a moment, suppose r = 1/cos(\theta). What is the...
First: "evaluate the accuracy of this estimated model...". What have you been taught about goodness of fit. What tests can you use? BTW: Only one of those data points fall outside the limits of...
(1)When you are given a domain for f(x), the x>2 in your case, you may or may not be able to put in the value of 2. In this case you can't since you would get ln(0) which is undefined. But suppose...
Both are correct. They are both representations of the original function valid in different regions. For example suppose we want the reciprocal 999. Since 999 is (1000-1) we can use your equation...
As I understand it, the question is asking, in part, for units not the particular numerical answer. For example velocity has units of m/s (or equivalent other length units) and time has units of...
Given the form of an ellipse
a (x-x0)^2 + b (y-y0)^2 - c = 0
where a, b, and c are positive, what is an equivalent a, x, x0, b, y, y0 for your problem. What is the squared modulus of r.
Sometimes one can resort to tables of transforms to find the answer and work backward
https://en.wikipedia.org/wiki/Fourier_transform#Tables_of_important_Fourier_transforms
I'm unsure myself. I would expect the question to be more like "Solve the equation for x: 4x\, -\, 7y\, +\, 5z\, =\, 13"
in which case the answer is straight forward. Once one writes an equation...
Just as a point reference, these two equations are essentially the same formulas. Generally, in a situation such as this I try to manipulate the equation into something 'familiar' So, taking the...
I do programming (including spreadsheets) for $50 an hour and am picky about what I choose to do. So I generally don't give out formulas for programs and spread sheets.
But to try to help a...
Using
final selling price = a * total cost
profit = final selling price - total cost
you should be able to determine what you need
You might want to look at
http://mathworld.wolfram.com/CircularSegment.html
for some ideas. It looks like it might be possible to find out enough to completely describe the circle by combining...
(1) In order to compare these numbers you should 'compare apples to apples'. So, after tkhunny, normalize your data first to let us say 'percentages'. Let S be total sales in the rating period, I...
and my reply started a new thread. who would ave thunk.
Not quite sure of what you are doing but looks maybe like you have two vectors in a plane so you do the cross product to find the normal...
Yes, the calculations are correct.
For (3) neither is really more correct, they are the same thing mathematically. Some may prefer one or tuher but it makes no difference.
Wow!
As a spin off from Bob Brown's post:
Two things:
(1) Is the original polynomial
f(x) = -x2+5x-2
so that, in reality,
f(x2) = -x4+5x2-2
(2) If that is the original polynomial 'printed in...
Are you an engineering student? All I can think of is [assuming they really meant the problem as given], sometimes accuracy of measurements are expected to used. Thus if input data is given which...
Not easily nor without some work, much more than the simple 'take the derivative'. If I really had to do it without derivative, I would, as mmm4444bot said, guess and correct. Before starting that...