Question

DERIVATIVES: What does d[c]/dx mean?

Answer 1

example?

Answer 2

\[\frac{ d[c] }{ dx }\]

Answer 3

if it means \(c\) is come constant, then the derivative is 0

Answer 4

i mean this way of writing, what does it mean

Answer 5

like sometimes i see df/dy too

Answer 6

it means the derivative of \(c\) with respect to \(x\)

Answer 7

\[\frac{dy}{dt}\] means the derivative of y with respect to t. The bottom second variable is what the derivative is respect to. The y is the function to which the derivative is acting upon.

Answer 8

this bit of business is called leibnitz notation. some like it, some hate it. there is actually a subtle difference between \[\frac{d}{dx}[x^2]=2x\] which means the derivative of \(x^2\) and writing
let \(f(x)=x^2\) then \(f'(x)=2x\)

Answer 9

what @2le said
the variable at the bottom tells you what you are differentiating with respect to. i.e what you consider the variable . all the rest of the letters will be treated as constants

Answer 10

thx man!