Inequalities Flashcards

1
Q

Cómo se lee la ecuación (x+1)(x-1)>o

A

X=-1 y x=1
Luego entre los 3 rangos plug números para ver si es >0 o menor a cero. X solo podrá ser la sección que cumple con la inequality

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2
Q

¿Que significa abs(x) = 3?
¿Qué significa abs(x-ref)=3

A

La distancia entre 0 y x es igual a 3
La distancia entre la referencia y x es igual a 3

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3
Q

When can I add inequalities

A

Signs point to the same direction:
A>B y P>Q
Then A+P>B+Q

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4
Q

When can I substract inequalities?

A

When signs are in opposite direction
A>B y Q<P
Then: (A-Q)>(B-P)

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