lovely maths

[Killerkebab]

So you had: 1/sqrt(5), which you decided to write as:

sqrt(5)/5, or:
5^(1/2) * 5^(-1), or:
5^(-1/2)

 

[xirokx]

this is my answer

1/5 sqrt5

how do you write that in index form?

 

[Judgeneo]

Ahh... Back in the day when maths involved numbers... Uni Maths is insanely different

 

[lord filbuster]

this is my answer

1/5 sqrt5

how do you write that in index form?

Ok, just to clarify, is that sqrt5/5 i.e. one fifth of the square root of five, or 1/5*sqrt5 i.e. one divided by five times the square root of five

actually, Here is a piccy with both, just pick the one you have.

 

[ZG002]

Slowly backs out of thread

Sprints out of thread screaming about brain ache!

 

[ncjok]

Ok, just to clarify, is that sqrt5/5 i.e. one fifth of the square root of five, or 1/5*sqrt5 i.e. one divided by five times the square root of five

Reply #22 and still too much ambiguity. OP will fail

 

[xirokx]

this is what I have and need to convert to index form:

so ??

 

[Jotun]

this is what I have and need to convert to index form:

so ??

That can be simplified to 1/sqrt(5) or 5^-0.5

 

[lord filbuster]

this is what I have and need to convert to index form:

so ??

Ok then, the answer is the top one in my second picture.

 

[jak731]

Since you now have the answer, put this in your calculator: (sqrt2^sqrt2)^sqrt2 = ?

If you want to get really confused think about why i^i is a real number (with no imaginary parts, where i=sqrt-1).