Kuidas leida ruutvõrrandi diskriminant?
Ruutvõrrand, ruutfunktsioon

Quiz
•
Mathematics
•
9th Grade
•
Medium
Vilve Lepik
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
D = b^2 - 4ac
D = b^2 + 4ac
D = 2ab - 4ac
D = b^2 - 2ac
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Milline on ruutvõrrandi valemi diskriminandi valem?
D = b^2 - 4ac
D = a^2 + b^2 + c^2
D = b^2 + 4ac
D = 2ab - 4ac
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Kuidas leida ruutfunktsiooni haripunkti koordinaadid?
Leia x-väärtus -b/4a ja asenda see ruutf-ni f(x) valemisse, et leida vastav y-väärtus.
Leia x-väärtus -b/3a ja asenda see ruutf-ni f(x) valemisse, et leida vastav y-väärtus.
Leia x-väärtus -b/2a ja asenda see ruutf-ni f(x) valemisse, et leida vastav y-väärtus.
Leia x-väärtus -b/5a ja asenda see ruutf-ni f(x) valemisse, et leida vastav y-väärtus.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Kuidas leida ruutvõrrandi lahendid kasutades valemit?
Ruutvõrrandi lahendid saab leida kasutades valemit
x = (-b ± √(b^2 - 4ac)) / (2a).
Ruutvõrrandi lahendid saab leida kasutades valemit
x = (b ± √(b^2 - 4ac)) / (2a)
Ruutvõrrandi lahendid saab leida kasutades valemit
x = (-b √(b^2 - 4ac)) / (2a)
Ruutvõrrandi lahendid saab leida kasutades valemit
x = (-b ± √(b^2 + 4ac)) / (2a)
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Kuidas leida ruutvõrrandi lahendid kasutades diskriminanti?
Kui D = 0, siis ruutvõrrandil on kaks reaalarvulist lahendit
Diskriminant (D) arvutatakse valemiga D = b^2 + 4ac
Kui D > 0, siis ruutvõrrandil on kolm erinevat reaalarvulist lahendit
Diskriminant (D) arvutatakse valemiga D = b^2 - 4ac. Kui D > 0, siis ruutvõrrandil on kaks erinevat reaalarvulist lahendit. Kui D = 0, siis ruutvõrrandil on üks reaalarvuline lahend. Kui D < 0, siis ruutvõrrandil pole reaalarvulisi lahendeid.
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