
LOMENÉ VÝRAZY - ÚVOD
Authored by Aleš Kouřil
Mathematics
9th - 12th Grade
Used 40+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
V lomeném výrazu je
čitatelem:x + 1
1
y
z
Answer explanation
Je to x + 1, tedy ten výraz či číslo "nahoře" zlomku...
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hodnota lomeného výrazu pro x = 3
je:3
2
6
10
Answer explanation
Když dosadíme za x, dostaneme a to je 2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Podmínka pro lomený výraz
má tvar
Answer explanation
Sledujeme jmenovatele - tzn
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Podmínka pro lomený výraz
Answer explanation
Zajímá nás pouze jmenovatel, kde platí , což znamená
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lomený výraz
Answer explanation
Sledujeme jmenovatele, což znamená , odtud
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lomený výraz má podmínku
Answer explanation
Jmenovatel musí být různý od nuly, tedy
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Vyber všechny správné odpovědi: součin
se rovná nule, když
Answer explanation
Stačí když A nebo B jsou nulové, tak platí tři odpovědi A = 0 či B = 0 či A =0 a B =0
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