ENEDED

I don’t know the answer.

d/dx (f(x)) = 6 cos (x - (pi/2)) - 6 sin (2x - (pi/2))

When x = pi

6 cos (x - (pi/2)) - 6 sin (2x - (pi/2)) = 6 cos (pi/2) - 6 sin (3pi/2)

= 6 (1) 6 (–1)
= –6 + 6
= 0

The tracking is working for me and

What happened to the derivative? :stuck_out_tongue:

Haha. I have the same thought too.

My tube has finally left China.

2016-12-19 23:19USLAX / Despatched to overseas
2016-12-19 23:19 USLAX / Despatched to overseas
2016-12-16 23:00 HONGKONG / Hand over to airline
2016-12-16 22:00 HONGKONG / Arrive at facility
2016-12-16 11:28 Shenzhen,China / Depart from facility
2016-12-15 07:34 Shipment information received
2016-12-15 07:34 Shipment information received
2016-12-15 01:57 Shenzhen,China / Shipment operation completed
2016-12-14 20:55 Shenzhen,China / Shipment arrived at facility
2016-11-23 14:51Shipment information received

Mine arrived on the West coast, so little cross country trip left to do.

Mine just arrived!

of course, they spell orandge wrong.

Lights off! From left to right: White, Orange, Yellow, Green. The white and orange do NOT really look as blue and red as they do in my pic. To my eyes, the white is cool white and the orange is a peachy orange.

What’s included. Not sure what that braided, beaded string is. It’s too big for my wrist but too small for my head.

Sanded vs chrome comparison. Personally I like the sanded better. Chrome has a few imperfections that the sanding hides.

The printing says “VOLLSION TL25” instead of TL23…

FYI, for those who care, I live in CA and ordered mine on Nov 30th. According to the tracking they provide on eBay, my package was at “USLAX” last monday, dec 12. Yesterday morning (Dec 18), it updated saying that on Dec 14, it was “N/A parcel arrived at exchange office”. Their updates are a bit slow I guess.

2016-12-19 22:38 SESTO / Despatched to overseas
2016-12-16 23:00 HONGKONG / Hand over to airline
2016-12-16 22:00 HONGKONG / Arrive at facility
2016-12-16 11:28 Shenzhen,China / Depart from facility
2016-12-15 07:28 Shipment information received
2016-12-15 07:28 Shipment information received
2016-12-15 04:14 Shenzhen,China / Shipment operation completed
2016-12-14 21:00 Shenzhen,China / Shipment arrived at facility
2016-11-23 15:50 Shipment information received

Finally some movement and now it’s beeing picked up by other tracking services too, so it probably really is on its way.

Thanks for informing us.

Steps to place your order with VOLLSION:

  1. Visit VOLLSION eBay (cnequipment).
  2. Select quantity.
  3. Make An Offer at $29.99 /pc.
  4. State that you are from Freeme's VOLLSION TL23 Group Buy.
  5. Specific the color of the tritium and enclosure finishing that you want in "Add message to seller" field.
  6. Click "Review Offer".
  7. Wait for Vollsion's reply.

Seller will adjust the value manually when they received your offer.

An example eBay's "Make An Offer" option for those who are new to this eCommerce site.

thanks for this GB! How long are they going to have this sale for? I might want some more!

Received package.
Thanks freeme

Seller said that he had to reship it as it was lost, claims that tracking shows Honk Kong as of 12/20. I tracked it with the link provided (en.4px.com), says they never received the item.

I have no choice but to open a claim tomorrow if the tracking isn’t updated, I’ll keep it open for a week or two to see if the tracking becomes active. Regardless, at best I’ll be getting the shipment 2 months after I ordered it, that’s pretty bad.

I’m sure this was all inadvertent and I seem to have gotten unlucky here, still giving the seller the benefit of the doubt.

mine showed up in the mailbox today. Already on the wife’s keychain…lol. Thanks freeme!

Do leave seller a feedback on eBay if you guys like your new light.

I placed my order on November 22nd. I just checked the ebay order page and it ways ” Estimated delivery Friday, Dec 2, 2016 - Thursday, Dec 22, 2016”.
But below this it says - “USPS-”We have received notice that the originating post is preparing to dispatch this mail piece”.

So I’ll give it until Monday and see what happens……

Did mine go back to China?

Here is the tracking from a couple of days ago.
2016-12-19 23:19USLAX / Despatched to overseas
2016-12-19 23:19 USLAX / Despatched to overseas
2016-12-16 23:00 HONGKONG / Hand over to airline
2016-12-16 22:00 HONGKONG / Arrive at facility
2016-12-16 11:28 Shenzhen,China / Depart from facility
2016-12-15 07:34 Shipment information received
2016-12-15 07:34 Shipment information received
2016-12-15 01:57 Shenzhen,China / Shipment operation completed
2016-12-14 20:55 Shenzhen,China / Shipment arrived at facility
2016-11-23 14:51Shipment information received

Here is the USPS tracking now.

Could it be interpret as dispatch to overseas with USLAX as destination? It is a bit hard to tell right now.

I usually wait 30 days for shipments from China to reach me before I get concerned. If you’re in California or that region you can probably get away with waiting 20 days befor getting concerned