
Disequazioni di primo grado
Presentation
•
Mathematics
•
9th Grade
•
Practice Problem
•
Medium
Mario Beretta
Used 29+ times
FREE Resource
10 Slides • 11 Questions
1
by Mario Beretta
2
Open Ended
Digita cognome, nome e classe
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Trovare le soluzioni di una disequazione significa scoprire quali numeri sostituiti all'incognita permettono di ottenere una disuguaglianza vera
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5
6
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Ora prova tu a risolvere le disequazioni seguenti...
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Multiple Choice
−x>3
x>3
x<3
x<−3
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Multiple Choice
−9x≤0
x≥0
x>0
x≥9
x≥−9
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Multiple Choice
−5+x<1
x<4
x<6
x>−6
x<−4
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Multiple Choice
A quale disequazione corrisponde la soluzione presentata?
x≥7
−x<−7
x<−7
−x>7
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Multiple Choice
A quale disequazione corrisponde la soluzione presentata?
x<7
−x≤7
−x≤−7
−x≥−7
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Multiple Choice
A quale disequazione corrisponde la soluzione presentata?
x>−6
x<−6
−x<−6
−x>6
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Alcune volte, durante i calcoli, l'incognita scompare dalla disequazione che diventa perciò una disuguaglianza.
Come sempre, le disuguaglianze possono essere soltanto vere o false.
Ad esempio 5<8 è vera, -5>0 è falsa
Disequazioni impossibili o indeterminate
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Disequazioni indeterminate
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Disequazioni impossibili
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Ora prova tu a risolvere le disequazioni seguenti...
18
Multiple Choice
−2(1+5x)<−2(4x−2)−2x
impossibile
indeterminata
x>2
x>−2
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Multiple Choice
2x+6−x≥7+x
impossibile
indeterminata
x≥7
x>3
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Multiple Choice
(x+4)(x−4)>x2
impossibile
indeterminata
x>2
x>−2
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Multiple Choice
(7+x)2>x2+14x
impossibile
indeterminata
x>2
x>−2
by Mario Beretta
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