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andreev551 [17]
2 years ago
9

Which expression best completes the following definition of a complex number?

Mathematics
2 answers:
k0ka [10]2 years ago
7 0

Answer:

C. a+bi

I took the test

Degger [83]2 years ago
5 0
The answer is Isd= uyju love
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What is the value of 5 in 756 write and draw to explain how you know?
kykrilka [37]

In the attached diagram you can see Place Value Chart that is used to help understand the value of each digit based on the place or position.

For the number 756:

  • 7 has a value of 7 hundreds, or 700;
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  • 6 has a value of 6 ones, or 6.

Answer: 5 has a value of 5 tens, or 50

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(a) Starting with the geometric series [infinity] xn n = 0 , find the sum of the series [infinity] nxn − 1 n = 1 , |x| < 1.
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Let <em>f(x)</em> be the sum of the geometric series,

f(x)=\displaystyle\frac1{1-x} = \sum_{n=0}^\infty x^n

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f'(x)=\displaystyle\boxed{\dfrac1{(1-x)^2}} = \sum_{n=0}^\infty nx^{n-1} = \sum_{n=1}^\infty nx^{n-1}

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