vault backup: 2022-02-06 23:06:32

This commit is contained in:
Daniel Bulant 2022-02-06 23:06:32 +01:00
parent 42e404cfa6
commit 812ab2f5cc
2 changed files with 33 additions and 6 deletions

View file

@ -12,8 +12,8 @@
"checkpointList": [
{
"path": "/",
"date": "2022-02-03",
"size": 759032
"date": "2022-02-04",
"size": 759690
}
],
"activityHistory": [
@ -62,7 +62,11 @@
},
{
"date": "2022-02-03",
"value": 10589
"value": 11106
},
{
"date": "2022-02-04",
"value": 149
}
]
}

View file

@ -61,12 +61,20 @@ $0\not\in\mathbb{R}-\{0\}$
---
$d=-4$
$f_4:y=\frac{x+1}{x-2}$
$f_4^{-1}:$
$f_4^{-1}:2=\frac1y$
$y = \frac{x+1}{x-2}$
$y(x-2)=x+1$
$y(x-2)-x=1$
$x-2=\frac{(1+x)}y$
---
$d=\frac12$
$f_5:y=\frac1{x^2-1}$
$f_5^{-1}: x=\sqrt{\frac1y+1}$
$D_{f_5^{-1}} = H_{F_5} = (-1;\infty)$
$\frac12 \in (-1; \infty)$
✔️
---
@ -74,16 +82,31 @@ $f_5:y=\frac1{x^2-1}$
---
graf funkce $f:y=6x+b$, prochází bodem $A[0;4]$
$f(0) = 4$
$6*0 + b = 4$
$b = 4$
---
graf funkce $f:y=\frac32x+b$, prochází bodem $A[-2;9]$
$f(-2) = 9$
$\frac32*(-2)+b=9$
$-3+b=9$
$b=12$
---
## Určete číslo $a\in\mathbb{R}$ za předpokladu, že:
---
graf funkce $f:y=ax+2, prochází bodem $A[-2;6]$
graf funkce $f:y=ax+2$, prochází bodem $A[-2;6]$
$f(-2) = 6$
$-2a+2=6$
$-2a=4$
$-a=2$
$a=-2$
---
graf funkce $f:y=ax-2$, prochází bodem $A[1;2]$
$f(1)=2$
$1a-2=2$
$a=4$