, : 3333= 243
, , , 5 . : 3 5- . : 35 = 243
, ( ) . : , . ,
21 = 2 31 = 3
22 = 22 =4 32 = 33 =9
23 = 222 = 8 33 = = 27
25 = 222 22 = 32 35 = 333 33 = 243
, ( , 11, 12, 13, 14, 15)
? , , 4 .
S = 44 = 16 2.
, , ; , .
, ? V = 555 = 125 3.
, . , . 1- . 1 , .
. . ? ! , . ? .
35 = 243. .
1. : 3 ? 3 5- = 243
2. : , , 243?
3. : 3, 243? log 3 243 = 5.
, , . , .
, . :
. 5, , , 243 . n - - a , n - , a. = → = .
2 3; .
= 2, .. 22 = 4 = 3, .. 32 = 9
= 3, .. 33 = 27 = 2, .. 23 = 8
|
|
= 3, .. 34 = 81 = 2, .. 24 = 16
= 3, .. 35 = 243 = 2, .. 25 = 32
: log 3 243 = 5.
: 3 243. ( ) , 243 . , , .
: 2
log 24 = 2 2 2 = 4
log 28 = 3 2 3 = 8
log 216= 4 2 4 = 16
log 232= 5 2 5 = 32
3
log 39 = 2 3 2 = 9
log 327 = 3 3 3 = 27
log 381= 4 3 4 = 81
log 3243= 5 3 5 = 243
, , , , . , .
7 .
1) 0 = 1. 1. . , 0 . , . , 20 = 1, 153850 = 1.
2) = + . , . , 2325 = 23+5 = 28.
3) : = - . , .
, 3835 = 38-5 = 33.
4) () = . .
5) : (b) = b; (:b) = :b.
6) = . : , 1, , .
7) . , , . , = 2, = = 3, = = 4. , . , . : . , .
1. 45 2
: ( 7) = . , , 2: = = = 111 =11.
, , : 45 2 11 = 45 22 = 23. : 23.
2. : 14
: . 196 142.
= = = ( , , ).
= = = 141 = 14. , 14 14=0. : 0.
3. : 20
: , , . ?
169 = 132; = = = = ; 0,52 = = .
5
|
|
20 = = 20 = 20 13 = 7. : 7.
. , 4 .
1) : . , , , . : , log 2 8 = 3, 23 = 8.
2) log ( 1 2) = log 1+ log 2; log ( 1: 2) = log 1 log 2. .
3) log = log . .
. , .
1 = , log = . : , 1.
, 1, log 1= 0. 0.
:
4. log 2200 + log 2 .
: 2
log 2(200 ) = log 28 = 3, 23 = 8. : 8.
5. log 5135 log 55,4.
: , 2
log 5135 log 55,4 = log 5(135:5,4) = log 525 = 2, 52 = 25. : 2.
6. :
:
= 81 2 = 162.
( 92 = 81, 2). : 162.
2 . ( 1 , 2 ). , , .