#📐・Obor hodnot funkce

1 messages · Page 1 of 1 (latest)

nova lion
upbeat crystalBOT
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👋 Vítej ve svém vlákně

Ahoj @nova lion, prosím počkej na někoho, než ti odpoví na tvou žádost o pomoc.

Přeji krásný zbytek dne!

Shrnutí vlákna:

  • Úloha se zaměřuje na určení oboru hodnot funkce f(x) = (2x - 1) / (3x + 2).
  • Možnosti odpovědí zahrnují různé intervaly a hodnoty.
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📐・Obor hodnot funkce

nova lion
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i dont understand how x is not allowed to be 2/3? Because then 3x+2 is 4 which is reasonable

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and i think A is the right answer because -3x+2=0 in that case and thats not allowed

signal juniper
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nvm im stupid 😭

nova lion
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u good

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but i still dont understand

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it looks like a mistake by the test makers

queen locust
signal juniper
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it does look like a mistake by the test makers yeah

nova lion
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alright

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thanks

signal juniper
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oh wait no because its obor hodnot which means range of values

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as in not what x can be but what y can be

queen locust
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yeah I think it's C

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I don't have any paper rn, because I'm in a train, but I think AI got it quite right here

Screenshot_20260127-200917.png
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it's not ideal, but it's best I can do rn 😅

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To find the range of the function, you solve the equation for y (isolate x) and determine which values y can't take.

nova lion
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oh

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i used ai to translate it and it just said range of the function

queen locust
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not exactly sure if there is a difference and if so what it is in case of range of function/values

nova lion
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i thought its values of X

queen locust
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i think so

nova lion
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this is my best result so far 😃 😃 😃 😃

queen locust
# nova lion

I think you have a good chance of getting accepted, especially for an internal student I would say this score is more than good enough

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when are you taking your exam?

nova lion
nova lion
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This test was duben 2025

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i found it quite easy

queen locust
nova lion
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are the older tests easier than the next one?

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i mean SCIO