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Math Cambridge - 11th grade

Authored by Sevdije Krasniqi

Mathematics

11th Grade

CCSS covered

Used 670+ times

Math Cambridge - 11th grade
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16 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the sum of  z1=3+4iz_1=-3+4i  and  z2=5i10z_2=5i-10  

 26i2-6i  

 9i+139i+13  

 13+9i-13+9i  

 i+9i+9  

Tags

CCSS.HSA.APR.D.7

2.

FILL IN THE BLANK QUESTION

15 mins • 1 pt

Calculate   i129i^{129}  

Tags

CCSS.HSF-IF.C.8B

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Work out the value of

 3i22i\frac{3-i}{2-2i}  

 8+12i8+\frac{1}{2}i  

 8+4i8+4i  

 5+7i5+7i  

 1+12i1+\frac{1}{2}i  

Tags

CCSS.HSA.APR.A.1

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the trigonometric form of
 𝑧=4+4𝑖𝑧=−4+4𝑖  

 4(cos 3π4+isin 3π4)4\left(\cos\ \frac{3\pi}{4}+i\sin\ \frac{3\pi}{4}\right)  

 42(cos 3π4+isin 3π4)4\sqrt{2}\left(\cos\ \frac{3\pi}{4}+i\sin\ \frac{3\pi}{4}\right)  

 42(cos π4+isin π4)4\sqrt{2}\left(\cos\ \frac{\pi}{4}+i\sin\ \frac{\pi}{4}\right)  

 10(cos π3+isin 3π4)10\left(\cos\ \frac{\pi}{3}+i\sin\ \frac{3\pi}{4}\right)  

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Select the correct formula for the multiplication of complex numbers given in the trigonometric form

r1r2[cos(θ1θ2)+isin(θ1θ2)]\frac{r_1}{r_2}\left[\cos\left(\theta_1-\theta_2\right)+i\sin\left(\theta_1-\theta_2\right)\right]

r1r2[cos θ1θ2+isinθ1θ2]r_1r_2\left[\cos\ \frac{\theta_1}{\theta_2}+i\sin\frac{\theta_1}{\theta_2}\right]

r1r2[cos(θ1+θ2)+isin(θ1+θ2)]r_1r_2\left[\cos\left(\theta_1+\theta_2\right)+i\sin\left(\theta_1+\theta_2\right)\right]

r1r2[cos(θ1+θ2)+isin(θ1+θ2)]\frac{r_1}{r_2}\left[\cos\left(\theta_1+\theta_2\right)+i\sin\left(\theta_1+\theta_2\right)\right]

Tags

CCSS.HSA.APR.A.1

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

The green vector represents

a b \overrightarrow{a\ }\ -\overrightarrow{b\ }\

a ×b \overrightarrow{a\ }\ \times\overrightarrow{b\ }\

a +b \overrightarrow{a\ }\ +\overrightarrow{b\ }\

2a 2\overrightarrow{a\ }\

7.

FILL IN THE BLANK QUESTION

15 mins • 1 pt

What is the magnitude of  AB=(8,6)\overrightarrow{AB}=\left(-8,6\right)  

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