approximate sq rt -169

Question

zzr0ck3r · Answer

you cant

zzr0ck3r · Answer

sqrt(-anything) is a complex number with an imaginary part. our brains cant handle that aprx:)

anonymous · Answer

13

zzr0ck3r · Answer

you can aprx sqrt(169) then multiply it by sqrt(-1) but...
but its not much of an approximate because sqrt(169) = 13, thus an approximate would be 13i ... a very very very close approxiate that is:)

anonymous · Answer

-13

zzr0ck3r · Answer

the question makes no sense imo

zzr0ck3r · Answer

nono not -13 huge difference in 13i and -13

zzr0ck3r · Answer

tell your teacher it was a lame question and you refuse to answer it:)

anonymous · Answer

:(

anonymous · Answer

my answer is r8?

zzr0ck3r · Answer

say what?

anonymous · Answer

-13

zzr0ck3r · Answer

i would say 13 is closer, but this is silly. its like asking for a number that is an approximate of a chair

anonymous · Answer

plz tell

zzr0ck3r · Answer

the real answer is 13*sqrt(-1) And we have no way to give an approximate for this number as it makes no sense to talk about imaginary numbers with real numbers. they are not on the same plain(literally).

anonymous · Answer

ohh ok thnks alot

zzr0ck3r · Answer

@waterineyes can you elaborate on this topic?

zzr0ck3r · Answer

or @ajprincess

anonymous · Answer

Its values will be complex..

No real value exists for this square root..

zzr0ck3r · Answer

have you ever heard of approximation of complex numbers with imaginary parts?

zzr0ck3r · Answer

its a strange question because why would we even need to approximate such a known sqrt. so they asked it for a reason. I just cant think of such a reason.

anonymous · Answer

You can simply answer it as :

$$\sqrt{-169} = 13 i$$

Here : $i = \sqrt{-1}$..

anonymous · Answer

I have not heard of such approximation earlier..

We can't approximate it as you can't find the value of i..

zzr0ck3r · Answer

lets just say @shivraj if we were building a bridge and we got an answer of sqrt(-169) and we aprroximated and went on with our day, my guess is lots of people would die.

zzr0ck3r · Answer

:) tell your teacher I hate him/her:)

anonymous · Answer

You can't do more in it except writing your answer as 13i..

zzr0ck3r · Answer

cprrect

zzr0ck3r · Answer

I guess the real question is

is 1 an approximate for 1?