The Professor's Song [physics version (incl. math version)]

If you give me your attention, I will tell you what I am
I'm a brilliant math'matician (also something of a ham)
I have tried for numerous degrees, in fact, I've one of each
Of course that makes me eminently qualified to teach
I understand the subject matter thoroughly, it's true
And I can't see why it isn't all as obvious to you
Each lecture is a masterpiece, meticulously planned
Yet everybody tells me that I'm hard to understand
And I can't think why!
My diagrams are models of true art, you must agree
And my handwriting is famous for its legibility
Take a word like "minimum" (to choose a random word)
For anyone to say he cannot read that is absurd
The anecdotes I tell get more amusing every year
Though, frankly, what they go to prove is sometimes less than clear
And all my explanations are quite lucid , I am sure
Yet everybody tells me that my lectures are obscure
And I can't think why!
Take differentiation, it's as simple as can be
Like finding the derivative of tangent x let's see
It's tangent squared
No, secant squared
No, just secant, I bet
The sign in front is plus or is it minus? I forget
Well , it does have a derivative, of that there is no doubt
All these formulas are trivial if you only think them out
Yet students tell me, "I have memorized the whole year through
Ev'rythng you've told us, but the problems I can't do."
And I can't think why!