eq/ dis irrazionali + valore assoluto Flashcards

1
Q

√f(x) = g(x)

A

sistema
g(x)≥0 -> ccs
f(x)=g^2(x)

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2
Q

∛fx = g(x)

A

no condizioni, elevare tutto alla terza

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3
Q

√fx = √gx

A

sistema
fx e gx maggiore uguale 0 (dominio)
fx=gx

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4
Q

Più di una radice

A
Ce (maggiore uguale radici)
tutte radici positive
elevare alla seconda
forma normale
elevare alla seconda
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5
Q

√f(x) > g(x)

A
sistemi unione
1) gx < 0
    fx ≥ 0
2) gx ≥ 0
    fx > g^2x or ≥
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6
Q

√f(x) < g(x)

A

sistema
1) fx ≥ 0
gx > 0
fx < g^2(x) or ≤

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7
Q

∛fx ≥/< g(x) -> tutti segni

A

elevare alla terza

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8
Q

∛fx ≥/< ∛gx -> tutti i segni

A

elevare alla terza

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9
Q

|fx| = gx

A
unione sistemi
1) fx ≥0
    f(x)=g(x)
2) fx< 0
    -fx = gx
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10
Q

|fx| = |gx|

A

fx = gx v fx= -gx

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11
Q

+ valori assoluti

A

discutere segno (+-) valore assoluto

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12
Q

|f(x)| ≥/> g(x)

A

fx < -gx U fx ≥gx

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13
Q

|fx| ≤ gx

A

sistema
fx ≤ gx
fx ≥/> -gx

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14
Q

|fx| tutti segni |gx|

A

tutto elevato alla seconda

f^2 tutti i segni g^2

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