- #36
CyberShot
- 133
- 2
G01 said:Hmm, just wondering, why are you in school if you can solve all the problems quicker and more efficiently and more intuitively than your professors?
Just on a few occasions.
G01 said:Have you considered that you math background may not be as great as you thought? The integral formula you describe above is founded in intuitive geometrical reasoning and logic, expressed using math as a language. We use the formula as a shortcut, but always should remember where it comes from. Just because you may not understand where something comes from, does not mean it isn't founded in solid logic.
I think you should clarify and say my "symbology" and "algorithm-following" background is not that great.
Think about it. That's really what's under the hood of calculus and other maths. Following rules to get to the right answer. Consider the power rule, as an example.
My point is that high-level mathematics is incredibly arbitrary, akin to high-level programming languages. It's like somebody decides for you the way these languages are implemented and converted into binary.
The only reason calculus is quick and convenient is because we define things in a way that is convenient for calculus to act upon those things.
For example, consider an arbitrary vector field.
v = 2i + 3j - 4k
Now, why do we need vector calculus to calculate the curl?
Simple answer: we defined a vector field in terms of i's, j's, and k's that are easily manipulated by a bunch of algorithms (such as differentiation) to get the answer
It makes sense to use calculus here because the way we defined a vector just goes hand in hand with the way we defined our calculus to operate on that vector
now, it's perfectly fine to define the same vector field the following way:
v = 3d vector with and x component that of a line with y-int at the origin and a slope of 2
we could def. calculate the curl algebraically using NO calculus and only the notion of slope and 3d perpendicularity.
I'm just saying that things can be done the most basic way, and it's a shame that people don't show much appreciation for calculating things that way. Instead they rely on tricks and handy shortcuts like the power rule, product rule, which of course is the arbitrary "calculus-way" of calculating curl.
Physicists, especially at my university, are so brainwashed into thinking that the complex looking integrals and other funny math symbols are the whole story to the nature of reality that they begin to blindly think through symbols and notations (and get stuck) instead of thinking using their intuition and the fundamental + - way of approaching problems.