mirror of
https://github.com/danbulant/notes
synced 2026-05-19 04:18:49 +00:00
vault backup: 2022-12-07 11:29:17
This commit is contained in:
parent
d28cc7b94b
commit
746f76296d
3 changed files with 133 additions and 16 deletions
|
|
@ -12,8 +12,8 @@
|
|||
"checkpointList": [
|
||||
{
|
||||
"path": "/",
|
||||
"date": "2022-12-06",
|
||||
"size": 948992
|
||||
"date": "2022-12-07",
|
||||
"size": 950468
|
||||
}
|
||||
],
|
||||
"activityHistory": [
|
||||
|
|
@ -954,7 +954,11 @@
|
|||
},
|
||||
{
|
||||
"date": "2022-12-06",
|
||||
"value": 1215
|
||||
"value": 2182
|
||||
},
|
||||
{
|
||||
"date": "2022-12-07",
|
||||
"value": 509
|
||||
}
|
||||
]
|
||||
}
|
||||
|
|
|
|||
24
notes/.obsidian/workspace.json
vendored
24
notes/.obsidian/workspace.json
vendored
|
|
@ -13,7 +13,7 @@
|
|||
"state": {
|
||||
"type": "markdown",
|
||||
"state": {
|
||||
"file": "fyz/Mechanika tekutin/Termodynamika/Termodynamická teplota.md",
|
||||
"file": "mat/Funkce/Logaritmus.md",
|
||||
"mode": "source",
|
||||
"source": false
|
||||
}
|
||||
|
|
@ -77,7 +77,7 @@
|
|||
"state": {
|
||||
"type": "backlink",
|
||||
"state": {
|
||||
"file": "fyz/Mechanika tekutin/Termodynamika/Termodynamická teplota.md",
|
||||
"file": "mat/Funkce/Logaritmus.md",
|
||||
"collapseAll": false,
|
||||
"extraContext": false,
|
||||
"sortOrder": "alphabetical",
|
||||
|
|
@ -94,7 +94,7 @@
|
|||
"state": {
|
||||
"type": "outgoing-link",
|
||||
"state": {
|
||||
"file": "fyz/Mechanika tekutin/Termodynamika/Termodynamická teplota.md",
|
||||
"file": "mat/Funkce/Logaritmus.md",
|
||||
"linksCollapsed": false,
|
||||
"unlinkedCollapsed": true
|
||||
}
|
||||
|
|
@ -141,7 +141,7 @@
|
|||
"state": {
|
||||
"type": "outline",
|
||||
"state": {
|
||||
"file": "fyz/Mechanika tekutin/Termodynamika/Termodynamická teplota.md"
|
||||
"file": "mat/Funkce/Logaritmus.md"
|
||||
}
|
||||
}
|
||||
},
|
||||
|
|
@ -203,15 +203,15 @@
|
|||
},
|
||||
"active": "f7d9932211c6b72c",
|
||||
"lastOpenFiles": [
|
||||
"mat/mat.md",
|
||||
"dej/dej.md",
|
||||
"dej/moderní/komunismus/Brutalismus.md",
|
||||
"dej/moderní/komunismus/České století, Všechnu moc lidu Stalinovi.md",
|
||||
"mat/Funkce/Logaritmus.md",
|
||||
"fyz/fyz.md",
|
||||
"fyz/Mechanika tekutin/Termodynamika/Termodynamická teplota.md",
|
||||
"fyz/Mechanika tekutin/Termodynamika/Termodynamika.md",
|
||||
"fyz/Mechanika tekutin/Proudění/Rozdělení.md",
|
||||
"fyz/Mechanika tekutin/Termodynamika/Celsiova teplotní stupnice.md",
|
||||
"fyz/Mechanika tekutin/Termodynamika/Termodynamická teplota.md",
|
||||
"fyz/Mechanika tekutin/Proudění/Proudění.md",
|
||||
"fyz/Mechanika tekutin/Proudění/Hmotnostní tok.md",
|
||||
"fyz/Mechanika tekutin/Proudění/Bernoulliho rovnice.md",
|
||||
"fyz/Mechanika tekutin/Proudění/Proudnice.md",
|
||||
"har/har.md",
|
||||
"har/Tiskárny.md"
|
||||
"fyz/Mechanika tekutin/Termodynamika/Celsiova teplotní stupnice.md"
|
||||
]
|
||||
}
|
||||
|
|
@ -6,6 +6,9 @@ tags: [mat, mat/funkce]
|
|||
Na kalkulačce je <kbd>log</kbd> $= log_{10}x$
|
||||
<kbd>ln</kbd> $= log_ex$
|
||||
|
||||
$\log\frac{a}b=\log a - \log b$
|
||||
$\log a^2=2\log a$
|
||||
|
||||
|
||||
$$
|
||||
\log_ab=x
|
||||
|
|
@ -109,4 +112,114 @@ $a^4=81$
|
|||
$a^4=3^4$
|
||||
$a=3$
|
||||
|
||||
$log_a8=-3$
|
||||
$log_a8=-3$
|
||||
|
||||
---
|
||||
|
||||
$l=log^3\sqrt{\frac{a}b}=\frac{\log a}3-\frac{\log b}3$
|
||||
$l=\log^3\sqrt\frac{a}b=\log(\frac{a}b)^\frac13=\frac13\log\frac{a}b=\frac13(\log a - \log b)=\frac{\log a}3-\frac{\log b}3$
|
||||
|
||||
---
|
||||
|
||||
$4\log_63+5\log_62-\log_612=v$
|
||||
$\log_63^4+\log_62^5-\log_612=v$
|
||||
$log_6(\frac{3^4*2^5}{12})=v$
|
||||
$\log_6(\frac{3^4*2^5}{3*4})=v$
|
||||
$\log_6(\frac{3^3*2^5}{2^2})=v$
|
||||
$\log_6(3^3*2^3)=v$
|
||||
$\log_6(3^3*2^3)=v$
|
||||
$\log_6(6^3)=v$
|
||||
$v=3$
|
||||
|
||||
---
|
||||
|
||||
$\log_{10}20+\log_{10}50=v$
|
||||
$log_{10}(20*50)=v$
|
||||
$log_{10}(1000)=v$
|
||||
$v=3$
|
||||
|
||||
---
|
||||
|
||||
$\log_550-\log_52=v$
|
||||
$\log_5(50/2)=v$
|
||||
$\log_5(25)=v$
|
||||
$\log_5(5^2)=v$
|
||||
$v=2$
|
||||
|
||||
---
|
||||
|
||||
$\log_37+\log_3\frac{81}7=v$
|
||||
$\log_3(7*81/7)=v$
|
||||
$\log_3(81)=v$
|
||||
$log_3(9^2)=v$
|
||||
$log_3({3^2}^2)=v$
|
||||
$v=4$
|
||||
|
||||
---
|
||||
|
||||
$\log_28-4\log_22+\log_232=v$
|
||||
$\log_28-\log_22^4+\log_232=v$
|
||||
$\log_2(2^3*2^5/2^4)=v$
|
||||
$\log_2(2^8/2^4)=v$
|
||||
$\log_2(2^4)=v$
|
||||
$v=4$
|
||||
|
||||
---
|
||||
|
||||
### Definiční obory
|
||||
$y=\log(x+3)$
|
||||
|
||||
$x+3>0$
|
||||
$x>-3$
|
||||
$D=(-3, \infty)$
|
||||
|
||||
---
|
||||
$y=\log_3(x^2+4x-5)$
|
||||
|
||||
$x^2+4x-5>0$
|
||||
|
||||
$x>1$
|
||||
|
||||
$D=(-\infty;-5)\cup(1; \infty)$
|
||||
|
||||
---
|
||||
|
||||
$y=\log_5(8-x)-\log_5(x+5)$
|
||||
|
||||
$8-x>0$
|
||||
$x+5>0$
|
||||
|
||||
$-x>-8$
|
||||
$x<8$
|
||||
|
||||
$x>-5$
|
||||
|
||||
$D=(-\infty;8)\cap(-5;\infty)$
|
||||
$D=(-5;8)$
|
||||
|
||||
---
|
||||
|
||||
$y=\log_\frac35(4-x^2)$
|
||||
$y=\log_3(4-x^2)/\log_5(4-x^2)$
|
||||
|
||||
$4-x^2>0$
|
||||
$-x^2>-4$
|
||||
$x^2<4$
|
||||
$x^2<2^2$
|
||||
$x<2$
|
||||
|
||||
$D=(\infty;2)$
|
||||
|
||||
---
|
||||
|
||||
$y=\log_7\sqrt{3+x}$
|
||||
|
||||
$3+x\le0$
|
||||
$x\le-3$
|
||||
$x\in\langle-3;\infty)$
|
||||
|
||||
$\log\sqrt{3+x}>0$
|
||||
|
||||
$\sqrt{3+x}=0 \Leftrightarrow 3+x=0$
|
||||
$x=-3$
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue