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Zigmanuir [339]
2 years ago
15

❤️ i need this last question

Mathematics
1 answer:
spayn [35]2 years ago
4 0

Answer: 10\left(\cos90^{\circ}+i\sin90^{\circ}\right)

Step-by-step explanation:

Given

The complex number is z_1=0+10i

Complex number in polar form is given by

z=r\left(\cos \theta +i\sin \theta\right)

Compare it with the given complex number

r=10 and \sin \theta=1 which implies \theta must be 90^{\circ}

So, in the polar form, it is

z_1=10\left(\cos90^{\circ}+i\sin90^{\circ}\right)\\z_1=10e^{i\frac{\pi}{2}}

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Traces of surface x2 + y2 − z2 = 1. Determine the equation for the family of traces in x = n.
pickupchik [31]

Answer:

\mathbf{y^2 -z^2 =1- n^2}

Step-by-step explanation:

Give that:

the surface equation is  x^2 +y^2 -z^2 =1

from the family of traces in x = n given that x^2 +y^2 -z^2 =1 , the equation can be represented as :

n^2 +y^2 -z^2 =1

\mathbf{y^2 -z^2 =1- n^2}

This represents a family of hyperbola for all values of n expects that n = ± 1

So, if n = ± 1,

Then

y^2 - z^2 = 0

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2 years ago
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Alina [70]

Answer:

0

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3 years ago
Find the center of the equation 4x2 + y2 + 8%-5= 0.<br> O (-1,0)<br> (1,0)<br> (2.0)
balu736 [363]
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Please answer I need help quick!!!
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Answer:

85

Step-by-step explanation:

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