TRIGONOMETRY

Question

Let f(x)=x2-4x+1 g(x)=3x3-2 then find
a.   f-g

b.    (f+g) (2)

c.    ( f/g)(-1)

Answer 1

a. x² - 4x + 1 - (3x³ - 2)

-3x³ + x²  - 4x + 3

 

b. f(2) = 2² - 4(2) + 1

f(2) = 4 - 8 + 1

f(2) = -3

 

g(2) = 3(2³) - 3

g(2) = 3(8) - 3

g(2) = 24 - 3

g(2) = 21

 

(f + g)(2) = -3  + 21

(f + g)(2) = 18

 

c. This one's on you!