Listen NCERT Audio Books - *Kitabein Ab Bolengi*

9

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

If –1 < x < 0, then write the value of .

Given -1 < x < 0

We know that

Given

= 2 tan^{-1} x – 2 tan^{-1} x

= 0

3

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

If , then write the value f x + y + z.

6

Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

Writ the value of for x > 0.

36

If 4sin^{–1} x + cos^{–1} x = π, then what is the value of x?