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Dobrý deň, vedel by mi niekto, prosím, pomôcť zostrojiť graf? Vopred ďakujem. :)
g: y = x2 – 2x -3
- určím si priesečníky s osou x, teda vypočítam korene rovnice
x2 – 2x -3 = 0; x1 = 3 ; x2 = -1
- určím si vrchol paraboly V [ 1;-4]; x= (-b)/2a = 1
y= 12 – 2.1 -3 = -4
- určím si priesečník s osou y
P[0;-3]
tieto dva potrebujem (podľa vzoru hore + graf):
f: x2 + 3x -4
h: x2 – 9
Rieš nerovnice. Riešenie zapíš intervalom. Urob skúšku správnosti pre najmenšie prirodzené číslo, ktoré je riešením nerovnice.
Dobrý večer vedel by niekto s týmtom pomôcť dať do perfekta a zjednodušiť vety a aby tam nebolo žiadne préteritum. Ďakujem za každú odpoveď.
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