Найдите: 1) f(2), f(0), f(-1), если f(x)=12x-5; 2) f(10), f(-2), f(0), если f(x)=x^2 -...

Question

Найдите:

1) f(2), f(0), f(-1), если f(x)=12x-5;

2) f(10), f(-2), f(0), если f(x)=x^2 - 8x;

3) g(-2), g(2), g(0), если g(x)=(x-5)/(x+3).

Answer 1

1) f(2) = 24 - 5 = 19

    f(0) = 0 - 5 = -5

    f(-1) = -12 - 5 = -17

 

2) f(10) = 100 - 80 = 20

    f(-2) = 4 + 16 = 20

    f(0) = 0 - 0 = 0

 

3) g(-2) = -7/1 = -7

    g(2) = -3/5 = -0.6

    g(0) = -5/3 = 1

Answer 2

1)

f(2)=24-5=19

f(0)=0-5=-5

f(-1)=-12-5=-17

2)

f(10)=100-80=20

f(-2)=4+16=20

f(0)=0-0=0

3)

g(-2)=-7/1=-7

g(2)=-3/5=-0.6

g(0)=-5/3=1⅔