Числа и вычисления

Числа и вычисления

11th Grade

25 Qs

quiz-placeholder

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Числа и вычисления

Числа и вычисления

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Medium

Created by

Надежда Барковская

Used 6+ times

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25 questions

Show all answers

1.

OPEN ENDED QUESTION

30 sec • Ungraded

Формула синуса двойного угла

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2.

MULTIPLE SELECT QUESTION

10 sec • 1 pt

Продолжите формулу  cosα+cosβ=\cos\alpha+\cos\beta=  

Media Image
Media Image

 =cosαcosβsinαsinβ=\cos\alpha\cos\beta-\sin\alpha\sin\beta  

 =sinαcosβ+cosαsinβ=\sin\alpha\cos\beta+\cos\alpha\sin\beta  

3.

MULTIPLE SELECT QUESTION

10 sec • 1 pt

Продолжите формулу  tg2α=tg2\alpha=  

Media Image
Media Image
Media Image
Media Image

4.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Выбрать неверную формулу

sin2x2cos2x2=cosx\sin^2\frac{x}{2}-\cos^2\frac{x}{2}=\cos x

cos2x2=1+cosx2\cos^2\frac{x}{2}=\frac{1+\cos x}{2}

1cosx=2sin2x21-\cos x=2\sin^2\frac{x}{2}

tgx=2tgx21tg2x2tgx=\frac{2tg\frac{x}{2}}{1-tg^2\frac{x}{2}}

5.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Группа, к которой относиться формула , носит название sin(αβ)=sinαcosβcosαsinβ\sin\left(\alpha-\beta\right)=\sin\alpha\cos\beta-\cos\alpha\sin\beta  

формулы сложения

формулы приведения

формулы преобразования суммы в произведение

основные тригонометрические тождества

6.

MULTIPLE SELECT QUESTION

10 sec • 1 pt

Продолжите равенство  logаylogах=\log_аy-\log_ах=  

 =logа(ху)=\log_а\left(ху\right)  

 =logаху=\log_а\frac{х}{у}  

 =logаух=\log_а\frac{у}{х}  

 =logа(yх)=\log_а\left(y-х\right)  

7.

MULTIPLE SELECT QUESTION

20 sec • 1 pt

Продолжите равенство  logxаlogxв=\frac{\log_xа}{\log_xв}=  

 =logав=\log_ав  

 =logва=\log_ва  

 =logxвlogxа=\log_xв-\log_xа  

 =logxаlogxв=\log_xа-\log_xв  

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