NDA2018MathematicsFunctionsActual
Afunction f: A R is defined by the equation f(x)=x^2-4 x+5 where A=(1,4) . What is the range of the function?
Options
- A(2,5)
- B(1,5)
- C[1,5)
- D[1,5]
Correct answer
C. [1,5)
Step-by-step solution
aligned & f(x)=x^2-4 x+5=(x-2)^2+1 & f(1)=2, f(4)=5 aligned Range f(x)=[1,5)