Mathematik-Übungsbuch (Otto Opitz)

Marsoni

M251S

$20.10

Get it in 3 business days with 1 day shipping. Friday, May 29

Mathematik-Übungsbuch (Otto Opitz)This volume is the companion workbook for the best selling Opitz Mathematics Textbook for Economists , with approx. 250 problems and detailed solutions. In addition to traditional computational problems there are also conceptual questions in multiple choice form at the beginning of each chapter. The problems are also classified according to their degree of difficulty. Autorenportrait Prof. Dr. em. Otto Opitz; Prof. Dr. Robert Klein; Dr. Wolfgang R.

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Ok, I like the idea of this but the assembly is frustrating. One side lined up perfectly with the holes however, the small bars that connect the screen to base is not lining up. I think it's do the fabric the screen or divider is made of. It's not stretchy. I brought this months ago and just opened it today. I'm upset and don't even think returning it is possible. If the material was a bit longer or stretchy to give a little room to work with this divider would be great. However, I'm not sure what I can use it for since I'm unable to attach it to the bottom. Beware! Don't wait like me. Tip for the manufacturer. Next time invest in Velcro dividers so the fabric can be adjusted with ease. Literally if I take the screen off the frame aligns perfectly. However, it defeats its purpose of privacy. I might buy some material myself and create a more flexible divider. Or I'll buy Velcro myself and attach to the bottom. I don't know yet.

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Reviewed in the United States on December 15, 2025

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Keith leadbetter

Belleville, US

★★★★★ 5

Looks great, easy install

Color: Rgb, Size: 15.5in

These shelves look great and easy to install. Want to order a few more to finish out the man cave.

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Reviewed in the United States on May 21, 2026

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Ambitious Minds Productions

Battle Creek, US

★★★★★ 5

Great product

Color: Rgb, Size: 15.5in

This is a very good decoration multi purpose shelves. Looks perfect in right settings

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Reviewed in the United States on May 26, 2026

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Mike

Los Angeles, US

★★★★★ 4

App control and system memory sucks.

Color: Rgb, Size: 15.5in

These shelves are sick! I do have gripes about them. For some reason, you select your color or scene, after a few hours they start doing a breathing scene and totally change colors. Then when you go to switch it back, its like the device loses communication with the app. Also not a fan of it needing to be connected to wifi. Would much rather bluetooth so thats an odd one. Edit* the seller did reach out and offered a full refund for the product without me getting in touch and without wanting the shelves back. Updating from 3 stars to 4 for outstanding customer service.

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Reviewed in the United States on March 23, 2026

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Port Orchard, US

★★★★★ 5

Good quality

Color: Rgb, Size: 23.6in, Color: Rgb, Size: 23.6in

Easy to install with great results

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Reviewed in the United States on May 10, 2026