Question

If f is a real valued function defined by f(x) = x 3 + 4x + 3, then find f(1) and f(3).

Answer 1

F(1)=1+4+3=8

F(3)=27+12+3=42

Hope It Will Help You...!!

Answer 2

Answer:

f'(1) = 7

f'(3) = 31

Step-by-step explanation:

In the scenario here,  f is a real valued function with  

f(x) = x³ + 4x + 3

As per formula, d/dx(xⁿ) = n.xⁿ⁻¹

f'(x) = 3x² + 4

f'(1) = 3.1² + 4  

f'(1) = 7

f'(3) = 3.3² + 4  

f'(3)  = 31