General > Off Topic

Man Differentiates Circle!

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Botsareus:
Ok, I will try not to take peoples responses as hostility. I will keep repeating myself until someone understands me, like I did in the general board.

MightyPenguin:

--- Quote ---When I graph it on my calculator I get the top half of a circle.

To get the bottom half you have to have the original square root as negative.
--- End quote ---
 :rolleyes:

Ah. You somehow managed to miss the fact that a calculator, even the ever popular Graphical Calculator, only gives the positive answer to a square root?

 ;)

Numsgil:
That's because the square root function only returns a positive number by definition.  When you take the square root of a number, you must be sure to remember to add the +/- to get the full set of numbers.

x^2=4
x=+/-2

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