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Sidana [21]
3 years ago
14

What Ln(z) is answer????!!

Mathematics
1 answer:
dimaraw [331]3 years ago
3 0

Write <em>z</em> in exponential form:

z=1-i=\sqrt2 e^{-i\frac\pi4}

Then taking the logarithm, we get

\mathrm{Ln}(z)=\ln(\sqrt2) + \ln e^{-i\frac\pi4} = \boxed{\ln(\sqrt2)-\dfrac\pi4i}

so a is the correct answer.

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How did we transform from f(x) =x2 to g(x) = -3x2
Oksi-84 [34.3K]

Answer:

  f(x) is reflected over the x-axis and vertically scaled by a factor of 3

Step-by-step explanation:

If you compare the two functions, you see that ...

  g(x) = -3f(x)

Multiplication by -1 effects a reflection over the x-axis. (All y-values are transformed to their opposite.)

Multiplication by 3 is a vertical scaling by a factor of 3.

Taken together, f(x) is reflected over the x-axis and vertically scaled by a factor of 3.

7 0
3 years ago
In how many ways can a president and a vice president be randomly selected from a class of 20 students?
SpyIntel [72]

Answer:

n how many ways can a president, vice president, and a secretary be chosen? It is 12X11X10. Permutation of n things taken r at a time: nPr=n!/(n-r)! 12P3=12*11*10*9!/9!= 12*11*10=1320 ways.

Step-by-step explanation:

7 0
3 years ago
A triangle has sides with lengths of 4 yards, 6 yards, and 8 yards. Is it a right triangle?
Luda [366]

Answer:

It is not

Step-by-step explanation:

If you pythagores- a^2+b^2=c^2

You will get 4^2+6^2=8^2

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7 0
2 years ago
I need help with this ​
Alex73 [517]

Answer:

the pattern step number of second step is added to number of balls used of first step to get number of balls used of second step

that is

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in the same way

6 + 4 = 10 ( first blank )

5 + 10= 15 ( second blank)

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5 0
2 years ago
Plzzz help me i can not find it nowhere
ratelena [41]

Answer: D. 50

Step-by-step explanation:

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x= 100/2

x= 50

6 0
3 years ago
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