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20 hodin výuky
1. Analytická geometrie lineárních útvarů (5 hodin)
2 hodiny
řekli jsme si, jak zapsat bod, jak ze dvou bodů zapsat vektor, jak pomocí vektoru a bodu zapsat rovnici přímky (směrový vektor-parametrické rovnice; normálový vektor-obecná rovnice), řekli jsme si, jak směrový vektor převést na normálový, řekli jsme si, jak vypočítat délku vektoru
příklady na procvičení:
a) jsou dány body A[4;7], B[3;12]; napište souřadnice vektoru u=B-A; napište parametrické vyjádření přímky procházející bodem A, se směrovým vektorem u
b) jsou dány body A[2;9], B[5;8]; napište souřadnice vektoru u=B-A; tento vektor - směrový vektor přímky převeďte na normálový vektor přímky n; napište obecnou rovnici přímky procházející bodem A, s normálovým vektorem n
c) jsou dány body A[8;-7], B[7;1]; napište souřadnice vektoru u=B-A; určete jeho velikost
1 hodina
příklady na procvičení (ze 4.10.2010 na 11.10.2010):
1a) přímka je dána rovnicí: 2x + 4y - 7 = 0; určete její normálový a směrový vektor
1b) přímka je dána rovnicí: -4x + 2y + 3 = 0; určete její normálový a směrový vektor
2a) určete obecnou rovnici přímky: p: x = 2 - 4t; y = 6 + 2t; t
R
2b) určete obecnou rovnici přímky: q: x = 1 + t; y = - 6 - 5t; t
R
3a) vypočítejte skalární součin vektorů u.v: u = (4; -2); v = (1; 5)
3b) vypočítejte skalární součin vektorů a.b: a = (-2; 7); b = (2; -3)
2 hodiny (11.10.2010)
test z učiva předchozích hodin; polohové a metrické úlohy
příklady na procvičení (z 11.10.2010 na 1.11.2010):
1) určete vzájemnou polohu dvou přímek (přímek p a q) daných zápisy:
p: 2x - 4y + 3 = 0; q: x = 2 - 3t; y = 1 + 2t; t
R
pokud nepůjde o rovnoběžky, určete jejich průsečík a úhel, který svírají; v případě, že o rovnoběžky půjde, a půjde o rovnoběžky různé, určete vzdálenost těchto rovnoběžek
2) najděte patu kolmice spuštěné z bodu Q[8; -3] na přímku m: 5x + 2y - 6 = 0; určete vzdálenost bodu Q od přímky m
3) určete vzájemnou polohu dvou přímek (přímek r a s) daných zápisy:
r: x = 2 + t; y = 7 - 4t; t
R; s: x = 1 - 2t; y = 2 + 8t; t
R
pokud nepůjde o rovnoběžky, určete jejich průsečík a úhel, který svírají; v případě, že o rovnoběžky půjde, a půjde o rovnoběžky různé, určete vzdálenost těchto rovnoběžek
4) najděte patu kolmice spuštěné z bodu H[-7; -3] na přímku k: x = 4 - 2t; y = -2 + t; t
R; určete vzdálenost bodu H od přímky k
2. Kombinatorika
... trocha opakování a maturity
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Vyzkoušejte tento odkaz - jde o freewarový (volně šiřitelný) program geometrického náčrtníku: http://www.geogebra.org/cms/cz
řezy krychle
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Přehled komentářů
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Why are fake luxury handbags so common? There’s more to them than meets the vision.
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A Risks of Buying and Trading Counterfeit Luxury Bags
While replicas might seem like an simple way to enjoy the finer aspects of life,
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the market for fake designer bags shows no signs of slowing down. the rise of e-commerce and social media platforms has made it easier than ever for counterfeiters to reach customers directly.
Brands are responding with advanced anti-counterfeiting measures, including microchips, blockchain technology, and robust authentication processes. However, as counterfeiting techniques also evolve, this remains a constant game of cat and mouse.
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The proliferation of fake designer bags continues to challenge luxury brands. while some argue that replicas dilute brand exclusivity, others see counterfeiting as proof of a brand’s desirability.
There’s also a movement among consumers and advocates for "inspired" fashion—that is, affordable, legal alternatives inspired by high-end designs and trends—offering a middle ground for those who prioritize ethics and affordability.
Why Authenticity Still matters
while the appeal of replica designer bags is undeniable, there’s something special about owning the real thing. beyond the status and exclusivity, genuine designer bags represent unparalleled craftsmanship, rich history, and a commitment to quality.
If you’re a fan of luxury fashion, engaging with authentic pieces—whether through pre-owned platforms like the RealReal or rentals through companies like Bag Borrow or Steal—can provide an ethical and satisfying solution without breaking the bank.
ultimately, loving fashion doesn’t have to mean compromising your values or quality.
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(Peterpam, 3. 1. 2025 23:07)
Fake luxury bags have evolved a significant factor within a fashion sector, transforming out of a weakly hidden mystery to an thriving enterprise having global implications. For a few, these bags represent a affordable method to experience the appeal of opulence without the high cost label. For others, these symbolize a ethical and legal dilemma within a world of fashion.
This blog dives into the emergence of fake luxury bags, their appeal, and its dangers involved. You'll also learn ways to recognize a fake and take a glance into the prospects of this expanding industry—all wrapped up an fashionable examination of style's more fascinating gray area.
A Attraction of Fake Designer Bags
Why are fake luxury handbags so popular? There is more to them than meets the vision.
Affordability Minus a Cost
One among the main causes why the favor of replicas remains cost. For individuals who appreciate designer brands but cannot rationalize splurging thousands of money on an purse, replicas provide an budget-friendly alternative.
A good-quality fake can often copy the appearance and texture of a genuine item, allowing customers to enjoy a status of opulence without breaking the bank.
Symbol of Wealth on a Budget
Luxury products like handbags have become symbols of status. Although owning an authentic Chanel or Louis Vuitton might remain a unattainable ambition for most, replicas enable individuals to achieve the coveted look without the luxury price label.
Increasingly Believable Craftsmanship
With contemporary manufacturing techniques and attention to detail, some counterfeit bags are so convincing that even style aficionados struggle to tell a distinction. For most purchasers, the craftsmanship of replicas has significantly increased its appeal.
An Statement Against Luxury Prices
Certain people opt for replicas as an form of rebellion against what they see as unreasonable prices by luxury labels. A $20 production expense that converts to an $2,000 retail price? Many view replicas as balancing a playing ground.
The Dangers of Buying and Selling Fake Designer Handbags
Although imitations might seem as an simple method to enjoy the better things of living,
the future of Fake Designer bags
The market for fake designer bags shows no signs of slowing down. the rise of e-commerce and social media platforms has made it easier than ever for counterfeiters to reach customers directly.
brands are responding with advanced anti-counterfeiting measures, including microchips, blockchain technology, and robust authentication processes. however, as counterfeiting techniques also evolve, this remains a constant game of cat and mouse.
the Impact on the fashion Industry
The proliferation of fake designer bags continues to challenge luxury brands. While some argue that replicas dilute brand exclusivity, others see counterfeiting as proof of a brand’s desirability.
There’s also a movement among consumers and advocates for "inspired" fashion—that is, affordable, legal alternatives inspired by high-end designs and trends—offering a middle ground for those who prioritize ethics and affordability.
Why authenticity Still matters
while the appeal of replica designer bags is undeniable, there’s something special about owning the real thing. Beyond the status and exclusivity, genuine designer bags represent unparalleled craftsmanship, rich history, and a commitment to quality.
if you’re a fan of luxury fashion, engaging with authentic pieces—whether through pre-owned platforms like The RealReal or rentals through companies like Bag Borrow or Steal—can provide an ethical and satisfying solution without breaking the bank.
Ultimately, loving fashion doesn’t have to mean compromising your values or quality.
The Fascinating World of Designer Handbags
(RobertFum, 3. 1. 2025 9:56)
Fake designer bags have evolved an significant force in a fashion sector, evolving out of a poorly concealed secret into a booming enterprise with worldwide implications. For some, those handbags represent a accessible method to enjoy the allure of luxury without a high price label. For some, they symbolize a moral and legal quandary within the world of style.
This article dives into a rise of fake designer handbags, its attraction, and its dangers associated. You'll also learn ways to recognize an fake and take a look into a future of this expanding sector—all wrapped up an stylish exploration of style's most fascinating gray area.
The Appeal of Fake Designer Handbags
Why are fake designer handbags so common? There’s more to it than meets the vision.
Accessibility Minus the Price
One among the primary reasons for its favor of imitation remains affordability. For people who appreciate designer brands yet can’t justify splurging thousands of dollars for an purse, imitations offer an budget-friendly option.
A good-quality imitation can often mimic a appearance and texture of a real thing, enabling customers to experience a prestige of opulence minus exceeding the bank.
Status of Wealth on a Budget
Luxury goods such as handbags have become icons of status. Although possessing a authentic Chanel or Louis Vuitton may remain an unattainable ambition for many, replicas allow people to get that coveted appearance without the luxury cost label.
More Convincing Quality
With contemporary manufacturing methods and attention to detail, certain fake handbags are so believable that even style experts struggle to tell the difference. For most purchasers, the craftsmanship of imitations has significantly boosted their appeal.
A Statement Opposing Luxury Prices
Certain people choose counterfeits as an means of protest against what they see as excessive markups by luxury labels. A $20 production cost that translates into an $2,000 retail price? Many view replicas as leveling a playing field.
The Dangers of Purchasing and Selling Counterfeit Designer Bags
Although imitations may appear like an easy way to experience the better things in living,
the future of Fake Designer bags
The market for fake designer bags shows no signs of slowing down. the rise of e-commerce and social media platforms has made it easier than ever for counterfeiters to reach customers directly.
brands are responding with advanced anti-counterfeiting measures, including microchips, blockchain technology, and robust authentication processes. However, as counterfeiting techniques also evolve, this remains a constant game of cat and mouse.
the impact on the fashion industry
The proliferation of fake designer bags continues to challenge luxury brands. While some argue that replicas dilute brand exclusivity, others see counterfeiting as proof of a brand’s desirability.
there’s also a movement among consumers and advocates for "inspired" fashion—that is, affordable, legal alternatives inspired by high-end designs and trends—offering a middle ground for those who prioritize ethics and affordability.
why authenticity Still Matters
While the appeal of replica designer bags is undeniable, there’s something special about owning the real thing. Beyond the status and exclusivity, genuine designer bags represent unparalleled craftsmanship, rich history, and a commitment to quality.
if you’re a fan of luxury fashion, engaging with authentic pieces—whether through pre-owned platforms like the RealReal or rentals through companies like Bag Borrow or Steal—can provide an ethical and satisfying solution without breaking the bank.
Ultimately, loving fashion doesn’t have to mean compromising your values or quality.
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