Join the #1 community for gun owners of the Northwest
We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.
Discuss firearms and all aspects of firearm ownership
Join others in organizing against anti-gun legislation
Find nearby gun shops, ranges, training, and other resources
Discover free outdoor shooting areas
Stay up to date on firearm-related events
Share photos and video with other members
...and much more!
parts.
In calculus, and more generally in mathematical analysis, integration by parts or partial integration is a process that finds the integral of a product of functions in terms of the integral of the product of their derivative and antiderivative. It is frequently used to transform the antiderivative of a product of functions into an antiderivative for which a solution can be more easily found. The rule can be thought of as an integral version of the product rule of differentiation.
If
u
=
u
(
x
)
{\displaystyle u=u(x)}
and
d
u
=
u
′
(
x
)
d
x
{\displaystyle du=u'(x)\,dx}
while
v
=
v
(
x
)
{\displaystyle v=v(x)}
and
d
v
=
v
′
(
x
)
d
x
{\displaystyle dv=v'(x)dx}
, then the integration by parts formula states that
∫
a
b
u
(
x
)
v
′
(
x
)
d
x
=
[
u
(
x
)
v
(
x
)
]
a
b
−
∫
a
b
u
′
(
x
)
v
(
x
)
d
x
=
u
(
b
)
v
(
b
)
−
u
(
a
)
v
(
a
)
−
∫
a
b
u
′
(
x
)
v
(
x
)
d
x
.
{\displaystyle {\begin{aligned}\int _{a}^{b}u(x)v'(x)\,dx&={\Big [}u(x)v(x){\Big ]}_{a}^{b}-\int _{a}^{b}u'(x)v(x)\,dx\\[6pt]&=u(b)v(b)-u(a)v(a)-\int _{a}^{b}u'(x)v(x)\,dx.\end{aligned}}}
More compactly,
∫
u
d
v
=
u
v
−
∫
v
d
u
.
{\displaystyle \int u\,dv\ =\ uv-\int v\,du.}
Mathematician Brook Taylor discovered integration by parts, first publishing the idea in 1715. More general formulations of integration by parts exist for the Riemann–Stieltjes and Lebesgue–Stieltjes integrals. The discrete analogue for sequences is called summation by parts.
Selling an Arisaka momentary tailcap that fits the scout bodies, and whatever else is compatible. Momentary only for those that follow That school of thought. $20.
Galco King tuk. rh. For Glocks 26, 19, 17, 27, 23, 22, etc. $30
Desantis sof tuck. Rh. 179 8j. Fits p365 and a few more. $20
Gun & Flower p365 rh. $10
PSA M4 handguard and s&w flashlight holster. $5 or free with other purchase.
Commercial m4 buffer tube. $5 or free with other purchase.
Looking for the small primer seating rod for the original (pre 2010) Auto-Prime that's NOS, or in mint condition. I have an NOS auto-prime that had a bad seating rod and I don't want to mess with fixing this one. That would result in shortening it's overall length. I'm watching some used units...
I have these items for trade.
1) Like New Surefire Weapon Light
2) Brand New Timney Trigger fits Ruger Precision rifle. (Still in box)
3) p80 jigs. 1 full size, 3 compact
4) Brand New Radian Raptor charging handle for .308
I'm looking for Glock parts, or ar parts, .22 cmmg conversion kit...
Benelli M4 "LE" Version 7+3 with "ghost loading". Adjustable stock, 7 round tube, shell holder. Comes with original parts (stock, 5 round tube), and the case and any ammo (lots of random 12g). Trades are a hard maybe. Asking 2800$ cash/ crypto but I'm willing to possibly do a little deal and...
Complete upper 300 rounds fired, $500
2012 Noveske SS Infidel 13.7" 5.56 with a factory pinned and welded KX3 Flash Suppressor.
Overall barrel length is 16.1". Low profile gas block.
Also included are a Spikes Tactical Nickel Boron coated BCG and Noveske Vltor charging handle. The 12"...
New in box, I bought wrong Gen.
Grey Ghost Precision GGP-19 compact lower = Glock 19 Gen 3.
- ZEV Pro upgraded curved face trigger
- ZEV / OEM Glock lower parts kit
$395
Trade:
- Glock 19 Gen 4 frame.
- RMR Type 2, 3.25 moa
- SRO 2.5 moa
- Streamlight TLR1HL, TLR7A, TLR8G and long gun light...
All barrels come with a collar adaptor from Spikes Tactical so you can use your drop in .22 conversion kit just by switching out the chamber adaptor with the collar. These collars will work with CMMG and other Ciener type AR15 conversion Kits. Please note these can be a little finicky about...
Selling my complete upper. Everything is milspec standard. If you want a cheap upper that isn't top dollar but just works and doesn't cost an insane amount this is the best upper to buy.
specs:
-free float rail
-key mod :)
-black nitrate everything
-mil spec built, standard quality
-has...
I have one of the original Black LTT 1301, it's got the Nordic and Aridus parts vs the GGG parts. I installed a limbsaver on it, being so light it's got some push to it, but not unmanageable. It's a solid shooter and a ton of fun, it has the Rob Haught Aimpoint Micro mount installed. I have an...
I have one of the original Black LTT 1301, it's got the Nordic and Aridus parts vs the GGG parts. It's a solid shooter and a ton of fun, it has the Rob Haught Aimpoint Micro mount installed. I have an aimpoint for it, KAC cap and plastic covers. Has less than 50 rounds shot through it. I find I...