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Type: Posts; User: calc67x

1. ## Thread: How to graph rational trigonometric function y = cosx/x+(pi/2) when x is negative

by calc67x
Replies
1
Views
216

### How to graph rational trigonometric function y = cosx/x+(pi/2) when x is negative

I am having loads of trouble graphing this function.
The function is
cosx/x+(pi/2)

Now the first steps are easy:
if x=0 then f(x) or y =2/pi
if x= pi/2 then f(x) or y =0

However, what I...
2. ## Thread: instantaneous velocity/average velocity from looking at position graph

by calc67x
Replies
1
Views
228

### instantaneous velocity/average velocity from looking at position graph

https://www.freemathhelp.com/forum/attachment.php?attachmentid=9154&d=1518795876&thumb=1&stc=1

I was having trouble getting this picture to be the right size, but the left hand side y axis has...
3. ## Thread: Can't understand this concept: lim_{x->infty} P(x)=(KP_0 e^{2x})/(K+P_0(e^{2x}-1))

by calc67x
Replies
10
Views
954

### finally got it!

I tried to post earlier but apparently did not press the correct button.
I did finally notice that e-2x(K+P0(e2x -1))would equal 0+P0*1 -0.
This would equal KP0 in the numerator and P0 in...
4. ## Thread: Can't understand this concept: lim_{x->infty} P(x)=(KP_0 e^{2x})/(K+P_0(e^{2x}-1))

by calc67x
Replies
10
Views
954

### Actually, I did notice in the denominator, we...

Actually, I did notice in the denominator, we have K+P0(e2x-1)
This would be K +P0*e2x-P0
when multiplied by e-2x we would get 0 +P0*1-P0*0 = P0
Then the numerator would be KP0 and the...
5. ## Thread: Can't understand this concept: lim_{x->infty} P(x)=(KP_0 e^{2x})/(K+P_0(e^{2x}-1))

by calc67x
Replies
10
Views
954

### Dr. Peterson: I corrected the parentheses as you...

Dr. Peterson:
I corrected the parentheses as you suggested
It appears that if you multiply e2x with e-2x (e to negative exp power) you would get 1.
in that case, KP0 would remain in the numerator...
6. ## Thread: Can't understand this concept: lim_{x->infty} P(x)=(KP_0 e^{2x})/(K+P_0(e^{2x}-1))

by calc67x
Replies
10
Views
954

### Can't understand this concept: lim_{x->infty} P(x)=(KP_0 e^{2x})/(K+P_0(e^{2x}-1))

I had a math problem that I need help with. I already have the answer but I can't arrive at the explanation.

It is the following:

P(x)=(KP0e2x)/(K+P0(e2x-1))
limx -- infinity

They want us...
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