0 is not a number.

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floodhound2
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Post by floodhound2 »

leetnigga wrote: No, those are not the same.

sqrt(-25) != 25^(-0.5)

sqrt(-25) == (-25)^0.5 == 5i

25^(-0.5) == 1/((25)^0.5) == 1/sqrt(25) == 1/5 == 0.2

There is no "mistake".
My point precisely about time you see the light. :wink:
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IceDane
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Post by IceDane »

floodhound2 wrote:
leetnigga wrote: No, those are not the same.

sqrt(-25) != 25^(-0.5)

sqrt(-25) == (-25)^0.5 == 5i

25^(-0.5) == 1/((25)^0.5) == 1/sqrt(25) == 1/5 == 0.2

There is no "mistake".
My point precisely about time you see the light. :wink:
I hope, for the sake of all mankind, that you are joking.

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leetnigga
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Post by leetnigga »

floodhound2 wrote:My point precisely about time you see the light. :wink:
Please...reread what I wrote.

Wow.

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Post by floodhound2 »

Wow. People you don't get it.

A number raised to a negative exponent has been defined to be the reciprocal of that number with a positive exponent.
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Post by bad_brain »

*can see how floody's amount of grey hair increases remarkable*
:lol:
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leetnigga
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Post by leetnigga »

floodhound2 wrote:A number raised to a negative exponent has been defined to be the reciprocal of that number with a positive exponent.
That's right. And your conclusion is "the square root is a mistake in mathematics"?

Earlier you confused the square root of -25 with 1/(25^0.5).

They are not equal because the square root of -25 is not the same as 25^(-0.5), it's (-25)^0.5 as I said.

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IceDane
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Post by IceDane »

floodhound2 wrote:Wow. People you don't get it.

A number raised to a negative exponent has been defined to be the reciprocal of that number with a positive exponent.
High school math lesson:

The xth root of a number a, raised to an exponent b can be defined as the number a raised to quotient b over x.

root(x, a^b) = a^(b/x)

The square root of nine:

sqrt(9) = root(2, 9^1) = 9^(1/2).

Of -25:

sqrt(-25) = root(2, -25) = (-25)^(1/2).

A number raised to a negative exponent is defined as the reciprocal of the number raised to the absolute value of the exponent, like you said.

I'm not sure what's unclear about this.

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Post by bad_brain »

and for this "productive post" I have spent my precious time to fix your account and didn't even got a "thanks" on IRC "leetnigga"?
allow me to behave in a similar way:
post deleted, thread locked.

have a nice day.
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