Math Question

[Otis Da HousKat]

ln(x)^x=ln(.25)

xln(x)=ln(.25)

x=ln(.25)/ln(x)


Not that is much better, but it is the technical answer to x. ;o

@Falcondude nou

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[Vertzer]

I was wondering what the ln on my calculator does. Interesting.

[Falcondude]

D'OH.

x = -2.

-2^-2 = 0.25
1/-2² = 0.25
(-1/2) x (-1/2) = 0.25
1/4 = 0.25

This means that my calculator was WRONG.

[Vertzer]

D'OH.

x = -2.

-2^-2 = 0.25
1/-2² = 0.25
(-1/2) x (-1/2) = 0.25
1/4 = 0.25

What are those steps for..

[Otis Da HousKat]

What are those steps for..

Are...are you serious?

[Falcondude]

What are those steps for..

Proof because half the idiots here can't do that

Also steps because my calculator spits out -0.25 =/

[Vertzer]

Are...are you serious?

As in those steps are redundant. It is obvious that 1/4 = 0.25 and you could just punch in -2^-2 into a calculator to get 0.25.
The question asked him to solve for x, stating that x = -2 and then converting that to fractions wouldn't get him full marks.

Oh wait nvm, he did it backwards.

1/4 = 0.25
(-1/2) x (-1/2) = 0.25
1/-2^2 = 0.25
-2^-2 = 0.25

Therefore x = -2.

[E_net4]

I was wondering what the ln on my calculator does. Interesting.

ln(X) = LOGe(X) , where e is this constant. And ln is this, by the way.

[Falcondude]

As in those steps are redundant. It is obvious that 1/4 = 0.25 and you could just punch in -2^-2 into a calculator to get 0.25.
The question asked him to solve for x, stating that x = -2 and then converting that to fractions wouldn't get him full marks.

Let me say a few things to this

My calculator seems to think that -2^-2 is -0.25, so I had to do it step by step.

The question didn't say that x = -2. It said that x^x = 0.25, or 1/4, either way. It's the same thing anyways.

I'm only in grade 9, and when we do 2^-2, we've been taught to flip it to (1/2)². It's just what I've learned.

And I don't really care if I get full marks on this. This is way beyond what my class is doing at the moment.

[Vertzer]

Because you have to go (-2)^(-2) otherwise this is what your calculator does: -(2)^(-2)

[Falcondude]

I entered it right. I'm certain of this.