The answer is no because if you do the vertical line test( draw a vertical line on each graph line that hits the circle) if the lline touches more than one point AT ANY TIME it is not a function. So in this case it is not a function

5 0

4 years ago

Find the product of z1 and z2, where z1 = 2(cos 80° + i sin 80°) and z2 = 9(cos 110° + i sin 110°)

nekit [7.7K]

ANSWER

$z_1 z_2=18( \cos( 190 \degree ) + i \sin( 190 \degree) )$

EXPLANATION

The given complex numbers are;

$z_1 = 2( \cos(80 \degree) + i \sin(80 \degree) )$

and

$z_2= 9( \cos(110 \degree) + i \sin(110 \degree) )$

Recall the binominal identity for complex numbers in polar form.

$z_1 z_2=r_1 r_2( \cos( \theta_1 +\theta_2) + i \sin(\theta_1 +\theta_2) )$

We apply this property to obtain,

$z_1 z_2=2 \times 9( \cos( 80 \degree + 110 \degree ) + i \sin(80 \degree + 110 \degree) )$

$z_1 z_2=18( \cos( 190 \degree ) + i \sin( 190 \degree) )$

4 0

4 years ago

Read 2 more answers

Trevor bought a sandwich for $4.05, a bag of chips for $2.05, and a drink for $1.60. The tax was $0.60. He gave the cashier $10.

jek_recluse [69]

He should receive $1.70 in change.

5 0

3 years ago

2 digit division by partial quotients 36 divided by 540

tresset_1 [31]

Divide use partial quotients 36 divided by 540. 1 ... So where looking for the quotient of 36 and 540 ... Mathematics; 5 points; 2 hours ago.
[PDF]

4 0

4 years ago