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cricket20 [7]
3 years ago
10

HELP ME PLEASEEEE THANKUU!!! I REALLY NEED IT !!!​

Mathematics
1 answer:
Mashutka [201]3 years ago
3 0

Answer:

20

3

4

5

6

6

Step-by-step explanation:

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g 7. Find Re f and Im f and find their values at the given z. (Both answers should be included) f = z⁄(z + 1), z = 4 − 5
Schach [20]

Answer:

The real and imaginary parts of the result are \frac{1441}{1601} and \frac{4}{1601}, respectively.

Step-by-step explanation:

Let be f(z) = \frac{z}{z+1}, the following expression is expanded by algebraic means:

f(z) = \frac{z\cdot (z-1)}{(z+1)\cdot (z-1)}

f(z) = \frac{z^{2}-z}{z^{2}-1}

f(z) = \frac{z^{2}}{z^{2}-1}-\frac{z}{z^{2}-1}

If z = 4 - i5, then:

z^{2} = (4-i5)\cdot (4-i5)

z^{2} = 16-i20-i20-(-1)\cdot (25)

z^{2} = 41 - i40

Then, the variable is substituted in the equation and simplified:

f(z) = \frac{41-i40}{41-i39} -\frac{4-i5}{41-i39}

f(z) = \frac{37-i35}{41-i39}

f(z) = \frac{(37-i35)\cdot (41+i39)}{(41-i39)\cdot (41+i39)}

f(z) = \frac{1517-i1435+i1443+1365}{3202}

f(z) = \frac{2882+i8}{3202}

f(z) = \frac{1441}{1601} + i\frac{4}{1601}

The real and imaginary parts of the result are \frac{1441}{1601} and \frac{4}{1601}, respectively.

8 0
3 years ago
What are the angle measurements of 1,2,3 & 4 for #3 & the measurements for 1 &2 on #4?
gogolik [260]

Step-by-step explanation:

iii=90

41+i=90(opposite angle)

i=90-41

i=49

26+ii+49+41=180(straight line angle)

116+ii=180

ii=180-116

ii=64

50+25+iv=26+64(opposite angle)

75+iv=90

iv=90-75

iv=15

55+i+55=180(straight line angle)

110+i=180

i=180-110

i=70

ii=55(alternative angle)

8 0
4 years ago
in kaylas class some of the students are wearing blue shirts 6/8 of the students are not wearing blue shirts what fraction of th
vlabodo [156]
Answer is 2/8 or 1/4

Explanation: 1 is the number for all of the students, 6/8 is the students not wearing blue shirts, so 1- 6/8  equals 2/8 which can be simplified to 1/4.
5 0
3 years ago
Read 2 more answers
(PLEASE HELP, BRAINLIEST IF CORRECT)
MaRussiya [10]

Answer:

Dylan's speed 30

Mike's 20

Step-by-step explanation:

hope this helps you!

6 0
3 years ago
Read 2 more answers
Can you simplify this?
hram777 [196]

Answer:

3^6

Step-by-step explanation:

We know that a^b * a^c = a^(b+c)

3^2 * 3^4 = 3^(2+4) = 3^6

8 0
3 years ago
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