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3 years ago

Use complete sentences to explain why there is no real number that is equal to .√-1

Mathematics

2 answers:

Harman [31]3 years ago

5 0

Answer:

This is because √-1 is i, which is an extension of real numbers called complex numbers.

Step-by-step explanation:

A real number is one that can be expressed in decimal form.Real numbers are those that appear on the number line.In mathematics, √-1 is i which is an extension of real numbers to represent complex numbers.

goldfiish [28.3K]3 years ago

4 0

Answer:

there is no number than can be multiplied by itself it give a negative answer.

Step-by-step explanation:

Eg. 1 X 1 = 1

-1 X -1 = 1

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DedPeter [7]

Answer:

The domain is $x\geq 7$

The range is $y\geq 1$

Step-by-step explanation:

we have

$y=\sqrt{x-7} +1$

Find the domain

Remember that

The domain of a function is the set of all possible values of x

we know that the radicand of the function must be greater than or equal to zero

$x-7\geq 0$

solve for x

$x\geq 7$

therefore

The domain is $x\geq 7$

Find the range

Remember that

The range of a function is the complete set of all possible resulting values of y, after we have substituted the domain.

For x=7

The value of y is equal to

$y=\sqrt{7-7} +1=1$

The solution for y is the interval [1,∞)

therefore

The range is $y\geq 1$

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