Math disability LIKE OMG I'M SO SCREWED
Dec. 28th, 2006 09:38 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
annabtgI just realized I DON'T KNOW MATH.
I can do stuff like calculate derivatives and integrals and get confused at the basics, such as roots. Is the cube root of a number always positive? Can we define the cube root of a negative number? Does 0^(-1/3) exist?
It's the system's fault, I say. Damn you, system!
See ya,
Anna.
I can do stuff like calculate derivatives and integrals and get confused at the basics, such as roots. Is the cube root of a number always positive? Can we define the cube root of a negative number? Does 0^(-1/3) exist?
It's the system's fault, I say. Damn you, system!
See ya,
Anna.
![[identity profile]](https://www.dreamwidth.org/img/silk/identity/openid.png){kind=small}
no subject
Date: 2006-12-28 08:13 pm (UTC)Of course my final answer was way off. I wholly relate to not being able to do simple stuff anymore.
no subject
Date: 2006-12-28 08:24 pm (UTC)See ya,
Anna.
no subject
Date: 2006-12-28 09:18 pm (UTC)no subject
Date: 2006-12-28 09:22 pm (UTC)no subject
Date: 2006-12-28 09:12 pm (UTC)no subject
Date: 2006-12-28 09:21 pm (UTC)See ya,
Anna.
no subject
Date: 2006-12-28 09:23 pm (UTC)no subject
Date: 2006-12-28 09:17 pm (UTC)I CAN'T DO MATH
SEITHERxD
All is well with the world =P
Indy.x ♥
no subject
Date: 2006-12-29 07:33 am (UTC)Cube root of a negative would be negative in theory. And Wikipedia says, "If x and y are real, then there is a unique solution and so the cube root of a real number is sometimes defined by this equation. If this definition is used, the cube root of a negative number is a negative number."
And the last one, my gut says no, it's undefined. (As Gob said, however, my gut is also hungry.) I haven't had calculus in a few years, so it's been forever since things like algebra, but isn't X^-1 = 1/X? Or am I making that up? If so, then you'd be dividing by zero, and therefore it'd be undefined.
no subject
Date: 2006-12-29 09:04 am (UTC)It exists, then! Oh, goodie. Thanks, vea. It was the only one I had yet to figure out.
Last one - yeah, my gut agreed with yours for that exact same reason, but I didn't know for sure. I went to ask my dad, and he started to stumble through a theory that you can define 0^-1, only then it can't be written as 1/0... "You're making this up!" I said. So he looked it up in one of his books and it turned out I was right *g*
(I'm still not used to the idea that I've come to know math better than my father, lol. Or Physics, for that matter. He's the one I used to always turn to when I needed help with these, up until I was in tenth grade.)
See ya,
Anna.
no subject
Date: 2006-12-29 09:08 am (UTC)Yeah, I await the day my brother surpasses me in math. He likes it a great deal more than I ever did. I remember the day when I had to teach him the quadratic formula... *sigh* My parents couldn't help him with his eighth grade math. Needless to say, I didn't bother them with my physics homework.
no subject
Date: 2006-12-29 01:01 pm (UTC)I can't do math either.
DX
but i can do everything else. like economics and philosophy.
isn't that what matters?but really, as far as i know, the cube root or any root for the matter is negative if the number itself is a negative.
and roots are different from integers so i think i'm right..
could be wrong though.
AND IF I AM, I SHALL INDEED BLAME THE SYSTEMno subject
Date: 2006-12-30 09:25 am (UTC)Hrmph.
They should have spent more time clarifying that stuff. That's why it's the system's fault.
See ya,
Anna.
no subject
Date: 2006-12-30 07:09 pm (UTC)so i shall smile and nod and pretend i know what roots and all the rest of that gibberish is.
no subject
Date: 2006-12-30 10:31 pm (UTC):D
If all of us knew the same things,
I would have nothing to brag aboutthe world would be very boring, don't you think? ;)See ya,
Anna.