Question

a real function f is defined by f(x) = 3x - 2, x belongs to any real numbers, find tge value of f(-3)+f(0)*f(7)​

Answer 1

Answer:

258

Step-by-step explanation:

we want know the concept well and answere the question

Answer 2

Step-by-step explanation:

f(x)=(a+2)x

3

−3ax

2

+9ax−1

⇒f

′

(x)=3(a+2)x

2

−9a−2ax<0

D<0

⇒4a

2

+4×3(a+2)×9a<0

a

2

−36a(a+2)<0

a

2

−36a

2

−72a<0

−a(35a−72)<0

a(35a+72)>0

also 3(a+2)<0

( diagram )

0∈(P,

35

−72

)U(0)⟶(1)

From (1) and (2)

⇒a={−m,−2}