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Andrej [43]
3 years ago
11

What is (-i)^6? I need help please....

Mathematics
2 answers:
mel-nik [20]3 years ago
6 0

Answer: -1

Step-by-step explanation:

beks73 [17]3 years ago
5 0

Answer:

Step-by-step explanation:

-i= -i

-i^2= 1

-i^3= -i * 1 = -i

-i^4= 1 * (-1)  = -1

-i^5= -i

-i^6= 1

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Translate the sentence into an equation.
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Use Newton's Method to approximate the zero(s) of the function. Continue the iterations until two successive approximations diff
liubo4ka [24]

Answer:

There is only one real zero and it is located at x = 1.359

Step-by-step explanation:

After the 4th iteration the solution was repeating the first 3 decimal places.  The formula for Newton's Method is

x_{n}-\frac{f(x_{n}) }{f'(x_{n}) }

If our function is

f(x)=x^5+x-6

then the first derivative is

f'(x)=5x^4+1

I graphed this on my calculator to see where the zero(s) looked like they might be, and saw there was only one real one, somewhere between 1 and 2.  I started with my first guess being x = 1.

When I plugged in a 1 for x, I got a zero of 5/3.  

Plugging in 5/3 and completing the process again gave me 997/687

Plugging in 997/687 and completing the process again gave me 1.36976

Plugging in 1.36976 and completing the process again gave me 1.359454

Plugging in 1.359454 and completing the process again gave me 1.359304

Since we are looking for accuracy to 3 decimal places, there was no need to go further.

Checking the zeros on the calculator graphing program gave me a zero of 1.3593041 which is exactly the same as my 5th iteration!

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5 0
3 years ago
Work out the point of intersection of the lines<br> 2x + 3y = 11 and 2y = 13 – 3x
borishaifa [10]

Answer:

x = 3.4

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Step-by-step explanation:

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divide both sides by -2.5:

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3 0
2 years ago
Divide completely for the question below
juin [17]

Answer:

B) 5x^2

Step-by-step explanation:

\sqrt{\frac{50x^5}{2x} }

We can divide 50 by 2, we get 25 and we can cancel out x from x^5.

Therefore, we get

\sqrt{\frac{25x^4}{1} }

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When we take the square root of 25, we get 5 and √x^4 = x^2.

Taking the square root, we get

= 5x^2

Answer: B) 5x^2

Thank you.

3 0
3 years ago
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