Verify Rolles theorem for the function `f(x)=x^3-6x^2+11 x-6` on the interval [1, 3].

Explanation

`f(x)=x^3−6x^2+11x-6`

`f(x) `is continuous on` [1,3]`


And differentiable on` (1,3)`


Being a polyonomial,


Now` f(a)=f(4)=1−6+11−6=0`

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