1. (u v)/ = u/ v/;
2. (Cu)/ = Cu/ (C = const);
3. (uv)/ = u/v + uv/;
4.
32. .. .
: f(x) (, b) , f(x) ,
, f(x) x0 , .
Δy = f(x0+Δx)-f(x0) = f '(x0)Δx+α(Δx)Δx, |
α(Δx) - , Δx→0.
33. , . . .
=f(x) . 0, :
. 0.
=f(x) . 0 .0.
dy-
dy () . dx= , dy : dy=
() 1- .
y=f(x) , 1 : dy= , , , , ,...
=
, .
:
dc = 0, = const.
:
d(u+v)=du + dv
. ,
d(u+c) = du (c= const).
:
d(uv) = udv + vdu.
.
d(cu) = cdu ( = const).
u/v = () v = v(x)
( ): , .
|
|
:
"" y' , . dy dx .
:
, , .
1. :
2.
3.
4. ( )
5.
d g(x), , .
34. ,. .
f(x) = , 2- f(x) :
y``,f``(x), , , 2- 1- :f``(x)=(f`(x))`
1- ,.. . 2- . 1- :
n-
S=S(t)- , S/ (t) t( ). V(t)= S/ (t).
.
S=S(t)- , S/ / (t) , .. (t)= S/ / (t).