vintage artistic pencils portrait for $18

I will give you: -3 JPG files. -Outlines + some details. -Pencil style. -Realistic + abstract touch. You will have head & shoulder portrait portrait of you or the people you love ( in JPG medium size file)Perfect for profile pictures, about me, gifts, wallpapers, birthday cards and many more! *note: if you need a custom size of the JPG file please tell me. – If you have any questions, please feel free to message me before placing an order. Thank you!

by: settasixx
Created: —
Category: Art & Design
Viewed: 190

Using a Lyapunov function to classify stability and sketching a phase portrait

Consider the system $ $ x’ = -x^3-xy^{2k}$ $ $ $ y’ = -y^3-x^{2k}y$ $ Where $ k$ is a given positive integer.

a.) Find and classify according to stability the equilibrium solutions.

$ \it{Hint:}$ Let $ V(x,y) = x^2 + y^2$

b.) Sketch a phase portrait when $ k = 1$

$ \it{Hint:}$ What are $ x’$ and $ y’$ when $ y=ax$ for some real number $ a$ ?

a.) Using $ V$ , we get $ \frac{d}{dt}V=2xx’+2yy’$

Plugging in our system , we get:

$ $ \frac{d}{dt}V=2x(-x^3-xy^{2k})+2y(-y^3-x^{2k}y)$ $ $ $ =-(x^4+y^4)-x^2y^{2k}-x^{2k}y^2<0$ $ I dropped the $ 2$ since it doesn’t matter to determine stability. We see that our own equilibrium is $ (0,0)$ since setting $ x’=0$ we get $ $ y^{2k}=-x^2$ $ Which only works for $ x=y=0$

Therefore our system is asymptotically stable at the origin.

I am having trouble with b.), mostly because the hint is confusing me.

Let $ y=ax$ , then our system becomes $ $ x’=-x^3-a^2x^3=-x^3(1+a^2)$ $ $ $ y’=-a^3x^3-ax^3=-x^3(a^3+a)$ $ I am not sure what to do with this. Using linearization doesn’t work since the Jacobian will be the zero vector at the point of interest. I have never had a problem that asks to draw a phase portrait when linearization doesn’t work, so I am hoping someone more clever than me can offer some advice.

How can I filter and sort videos by orientation (portrait or landscape)?

I’m attempting to filter and sort all videos in a local folder based on their orientation. I can’t find anything in AppleScript, macOS file search, or video metadata that will make this easy. My guess is that I’ll have to grab the video’s height and width, and then generate a folder for each distinct combination. I’ll then have to eyeball which sizes are portrait and landscape.

My goal:

  1. Export all original videos from iCloud Photos (~400GB) and store them locally
  2. Filter and sort them by portrait or landscape orientation
  3. Remove videos that meet further specified criteria (under 15 seconds, duplicates, etc).

Draw avatar cartoon portrait, sticker, emojis from your real pictures for $25

I will draw Cartoon portrait for you in many expression, I can draw it as cartoon’s stickers and emojis of your pictures or your pets pictures. feel free to contacting me first before you buy. you will get 1 PNG file (for Cartoon portrait drawing).20 Gifs or PNG files(for stickers and emojis drawing) We are: More than 8th years work as vector Design. With many customers in my real job, With style and skill can make your photos become awesome cartoon realistic. And ready to fast working if you needed.

by: cyleung881
Created: —
Category: Art & Design
Viewed: 253

Screen flicker in Portrait mode in Ubuntu 16.04

I have a problem with my Ubuntu installation on different PCs. I need to work with the screen in portrait mode, but if I set this property on the screen, it starts flicker and ghosting windows and stuff in the lower part of the screen and if I move things, them crumble while moving. Anyone has faced the same problem and can help me?

Thank you!

How to toggle portrait / landsape screen orientation with single launchable command?

I would like to get screen rotation under manual control.

Action A: set portrait mode Action B: set landscape mode

Both actions with immediate effect, no menu, no confirmation, etc.

I would like to have these commands reachable as regular app. And add it into customizable actions in other apps, i.e. to on-screen drawer (Jina), as Bixby voice command, Bixby button action etc.

Apps I reviewed put such rotation commands somewhere to toggle buttons area or to widget. So they are not launchable on their own. Any idea how to get commands A and B (or one which toggles A/B) available as app?

How do I get the high contrast sharpness seen in this B&W portrait?

I would like some help on achieving this image on my D7000:

enter image description here

the only lenses I have with me are: 50mm f/1.2, 80-200 AF f/2.8 and the 18-105 kit lens

I tried B&W with the built-in B&W conversion in the D7000 but I can’t get such sharpness.

So how can I achieve this level of sharpness with my D7000 and the given lenses?


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by: seochop
Created: —
Category: Art & Design
Viewed: 191