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}](https://tex.z-dn.net/?f=%5Csqrt%7Ba%5E2%2Bb%5E2%7D)
Here we have a=4 and b= -7 so substituting the values in the formula we will get
![\sqrt{4^2+(-7)^2}](https://tex.z-dn.net/?f=%5Csqrt%7B4%5E2%2B%28-7%29%5E2%7D)
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.