Question

Punctele:b, c, e
Repede

Answer 1

Răspuns:

Explicație pas cu pas:

b)

f(x) = x

g(x) = -2x

f(x) ≤ g(x)

x ≤ -2x

x + 2x ≤ 0

3x ≤ 0

x ≤ 0

________________

c)

f(x) = x + 1

g(x) = 3

f(x) ≤ g(x)

x + 1 ≤ 3

x ≤ 3-1

x≤ 2

__________________

e)

f(x) = x/2

g(x) = -2x

f(x) ≤ g(x)

x/2 ≤ -2x

x/2 + 2x ≤ 0

5x/2 ≤ 0

x ≤ 0