Most Frustrating, Embarrassing Brain Farts (1 Viewer)

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I am a "physics guru", at least at my high school's level (which isn't really anything at all). I know several advanced integration techniques, linear algebra, and fairly advanced methods for solving differential equations. Even with all of this mathematics background, I still have not taken the AP Physics C exam due to my school's (in my personal opinion) lax curriculum not offering it as of now.
So, with my 8 dollar "University Physics" book, I scanned through to the "challenge problems" (which only take about a minute or two of thought to complete). One of the problems had me analyze certain properties of the equation (showing a velocity dependent force):

m(dv/dt)= Cv2

So, with all my arrogance and background, I tackled this problem. However, I soon became infuriated by the fact that I could not integrate the RHS with respect to time! I drastically manipulated differentials, but it was of no use! This simple problem had stumped me!

Then, about an hour after I had given up in despair, I realized that the left hand side of the equation existed and that I could divide by the v2 term to separate the variables. Wow. Just... wow. Does anybody else have these discouragingly terrible brain farts?
 
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oh ya I answered my age wrong ...twice -_-
I think I can think of e=mc^2 faster than my age xD
 
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I think everyone has used a property of logarithms wrong at least once in a long, complicated problem and had to retrace their steps until they saw the boneheaded nonsense log(a + b) = log(a)log(b) in some dense block. Or maybe that's just me. :p
Also, 2 + 3 = 6, of course.
 
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My theory is that 10% of all differentiations end up as integrations and 10% of integrations end up as differentiations.:cry:.It's sort of like a mathematical uncertainty principle.
 

Borek

Mentor
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Have you never canceled out 2s?

[tex]\frac 2 2 = 0[/tex]
 

drizzle

Gold Member
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:redface:...:shy:...:frown:.......:grumpy:...:mad:...:devil:----- Get it?! :biggrin:
 

lisab

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Science Advisor
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Have you never canceled out 2s?

[tex]\frac 2 2 = 0[/tex]
I probably have. I know for sure I did this once on a test:

(x + y)3 = x3 + y3

:redface:
 

Pythagorean

excitation
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Can't we talk about our infallible moments of lucid insight instead? Much shorter list.
 
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I probably have. I know for sure I did this once on a test:

(x + y)3 = x3 + y3

:redface:

Eek!:rofl:

Then again, I can't even recall the last time I sat for a test that even remotely asked a question like that.
 
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PracticeFish

Guest
I probably have. I know for sure I did this once on a test:

(x + y)3 = x3 + y3

:redface:
Of course, one of x or y was 0, right? :tongue:
 
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I was asking you all for your personal worst brain farts, but posting complete nonsense is also fine I guess.
 

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