NCERT Class 12-Mathematics: Chapter –5 Continuity and Differentiability Part 10

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Question 4:

Answer:

We have,

At

And

Question 5:

Answer:

At

So, is discontinuous at

Question 6:

Answer:

We have,

At

Since.

So, is continuous at .

Question 7:

Answer:

We have, .

At

S0, is continuous at

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