MathematicsEasy179×since 2002Q4210The number of points, where the function f:R→Rf: \mathbf{R} \rightarrow \mathbf{R}f:R→R, f(x)=∣x−1∣cos∣x−2∣sin∣x−1∣+(x−3)∣x2−5x+4∣f(x)=|x-1| \cos |x-2| \sin |x-1|+(x-3)\left|x^{2}-5 x+4\right|f(x)=∣x−1∣cos∣x−2∣sin∣x−1∣+(x−3)x2−5x+4, is NOT differentiable, is :A1B2C3D4Check answerSkip