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xcrypt
Group Title
This is probably a weird question but is there a reason or intuition we write higher order derivatives as
\[ \frac{d^n y}{dx^n} \]
instead of
\[ \frac{d^n y}{d^n x} \]
or something similar?
 2 years ago
 2 years ago
xcrypt Group Title
This is probably a weird question but is there a reason or intuition we write higher order derivatives as \[ \frac{d^n y}{dx^n} \] instead of \[ \frac{d^n y}{d^n x} \] or something similar?
 2 years ago
 2 years ago

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thinker1 Group TitleBest ResponseYou've already chosen the best response.0
no mandw:1352457865514:dw
 2 years ago

thinker1 Group TitleBest ResponseYou've already chosen the best response.0
do u understand mate
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
that's not what I am asking though
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
do you agree that \[\huge \frac{dy}{dx} = \frac d{dx}\] they're the same. right?
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
I have never the right hand side notation before
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
you're not familiar with d/dx?
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
is it the same by definition?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
that's a bummer...i would assume you're at the start of your calculus class...hmm i'll try thinking of another analogy
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
I'm actually doing real analysis
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
...then why are you not familiar with d/dx?
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
I have never seen it before, not in my books
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
But I've never taken calculus before ra so that might explain it
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
hmm i can't think of any other way to explain the reason behind d^n y/dx^n without using d/dx...so i suppose i should explain that
 2 years ago

thinker1 Group TitleBest ResponseYou've already chosen the best response.0
actually i wanted to show u that if \[d ^{n}y /d ^{n} x\]would have meant that its reciprocal had just an inverse relationship with it but actual \[d ^{n}y /d ^{n} x\] is differently related to \[d ^{n}x /d ^{n} y\]
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
\[\frac{dy}{dx} = \frac d{dx}\] mainly because \[\frac{dy}{dx} \implies \frac{d}{dx} (y)\] (this is algebra) then since y is usuallyimplied in functions, it is usually ommitted..that's why they just write d/dx for dy/dx
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.0
the derivative of a function is the rate that dependent variable changes as the independent variable varies in order
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
then... let's say you want the second derivative...the second derivative would be \[\frac d{dx} (\frac{dy}{dx})\] so again...using algebra, you get \[\frac{d^2y}{dx^2}\] i don't know if that made anything clearer for you....
 2 years ago

xcrypt Group TitleBest ResponseYou've already chosen the best response.0
oh, we write f' or dy/dx instead of d/dx
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
d/dx means derivative of with respect to x so dy/dx means derivative of y with respect to x
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.0
\[y=x^2\]\[\frac{\text dy}{\text dx}=2x\]\[\frac{\text d^2y}{\text dx^2}=2\] \[\frac{\text d^2y}{\text dx}=2\text dx\]\[{\text d^2y}=2\text dx{\text dx}\]\[{\iint \text d^2y}=2\iint\text dx^2\]\[\int \text dy=2\int( x+c)\text dx\]\[y=2\frac{x^2}2+c\]\[y={x^2}+cx+d\]
 2 years ago
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