What's that red curve in the Pressure graph? (Geek/nerd question)

Rubicon · Post by **Rubicon** » Sun Oct 02, 2022 5:09 am

lazarus wrote: ↑
Tue Sep 27, 2022 2:05 pm
And lynninnj, please stop blank-staring at the crickets; they hate that.

Since she said

lynninnj wrote: ↑
Mon Sep 26, 2022 9:28 am
`blank stare with crickets`

I don't believe the crickets are angered-- everybody (and thing) is simply blank-staring.

Rubicon · Post by **Rubicon** » Sun Oct 02, 2022 6:32 am

Rubicon wrote: ↑
Sun Oct 02, 2022 5:09 am

lazarus wrote: ↑
Tue Sep 27, 2022 2:05 pm
And lynninnj, please stop blank-staring at the crickets; they hate that.
Since she said

lynninnj wrote: ↑
Mon Sep 26, 2022 9:28 am
`blank stare with crickets`
I don't believe the crickets are angered-- everybody (and thing) is simply blank-staring.

Get back on topic guys before I get the big stick.

Rubicon · Post by **Rubicon** » Sun Oct 02, 2022 6:41 am

Rubicon wrote: ↑
Sun Oct 02, 2022 6:32 am
Get back on topic guys before I get the big stick.

So my non-matherithmic brain can't comprehend this:

robysue1 wrote: ↑
Mon Sep 26, 2022 3:18 pm
What you've drawn is known in calculus as the average value of function p(t) over the interval from t_start to t_end where p(t) is the actual pressure at time t. And of course that means that EPAP <= p(t) <= IPAP over the course of the whole breath.

Mathematically speaking, the average value of the function p(t) over the interval from t_start to t_end given by:

1/(t_end - t_start) * (the integral of p(t) from t_start to t_end

Geometrically it represents the y-value where the area under the curve is equal to the area of the rectangle whose top is the horizontal red line, the bottom is the x-axis, and the sides are at x = t_start and x = t_end

While I can see how it would be (relatively) easy to calculate the "area under the curve" I can't see where the "Red Line" would be established. Nor how to deal with all the italics. I mean, the rectangle (or at best, it's a parallelothing) is not defined.

lazarus · Post by **lazarus** » Sun Oct 02, 2022 4:08 pm

Rubicon wrote: ↑
Sun Oct 02, 2022 4:43 am
Don't know why.

Me neither.

https://www.health.harvard.edu/blog/is- ... 2107132542

What's that red curve in the Pressure graph? (Geek/nerd question)

Re: What's that red curve in the Pressure graph? (Geek/nerd question)

Re: What's that red curve in the Pressure graph? (Geek/nerd question)

Re: What's that red curve in the Pressure graph? (Geek/nerd question)

Re: What's that red curve in the Pressure graph? (Geek/nerd question)