# how can I say y=

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how can I say y= |x| is differentiable or not , in the interval [-1,1]??

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Ashok Kumar (anonymous)

by looking at the graph of[x]u can say

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Neelambar Chauhan (anonymous)

not

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Biswabhusan Jena (anonymous)

PROGRAMMES ON INHERITANCE:

question1

Take a class ‘student’ having datamember name,rollno.then derive a class ‘exam’ having marks in 3 subjects.
Then derive a class ‘result’ from ‘exam’and take a new class ‘sports’.sports class assigns a grade if a student has some sports activity
.so the final result is a combination of subject marks and sports grade.define suitable conversion table(like sports grade ‘O’
means +20,grade’A’means +10 etc)and display the the result of some student after necessary input.use suitable parametrized constructors.

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Sudipta Halder (anonymous)

it has a sharp corner at 0 like this ” / ” that’s why at that point you can’t find a tangent so it’s not differentiable at that point and so in the range [-1,1]

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Ranjan Gupta (anonymous)

it is diffrentiable..