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postnew [5]
3 years ago
13

Which of the following can be used to find the absolute value of 4 - 7i?

Mathematics
2 answers:
fomenos3 years ago
7 0

Answer:

Option 1 is correct

Explanation:

We have been given with the function 4 -7i

To find the absolute value means to find the modulus of the function.

And modulus of the function is  \sqrt{a^2+b^2}

Here we have a=4 and b= -7 so substituting the values in the formula we will get

 \sqrt{4^2+(-7)^2}

Hence, Option 1 is correct

Option 2 is incorrect because we do not consider "i" in finding absolute value or modulus

Option 3 is incorrect because it should be -7 not 7

Option 4 is incorrect because it should not be whole square.

Therefore Option 1 is correct.

inn [45]3 years ago
5 0
The first one.

|a+bi|=\sqrt{a^2+b^2}
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