CUET Preparation Today
The interval in which where the function $f(x)=x^3-3x^2+4x+1, x\in R$ is increasing, is : |
[2, 3] [-2, 4] [0, 3] R |
R |
The correct answer is Option (4) → R $f(x)=x^3-3x^2+4x+1$ $f'(x)=3x^2-6x+4=0$ $⇒3(x-1)^2+1>0$ always so f(x) is increasing on R |
