Question

Find the function value, If possible.

Answer 1

Explanation:

(a) f(-4) = 15

since x < -1

the function will be :-

-5x - 5

= -5(-4) - 5

= 20 - 5

= 15

(b) f(-1) = -2

since x >= -1

the function will be:-

x^2 + 2x - 1

= (-1)^2 +2(-1) - 1

= 1 - 2 - 1

= -2

(c) f(1) = 2

since x >= -1

the function will be:-

x^2 + 2x - 1

= (1)^2 + 2(1) - 1

= 1 + 2 - 1

= 2