Q4 of 126 Page 140

Write down the interval for the principal-value branch of each of the following functions and draw its graph:

cot-1 x


Principal value branch of cot-1 x is (0, π)



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2

Write down the interval for the principal-value branch of each of the following functions and draw its graph:

cos-1 x


 3

Write down the interval for the principal-value branch of each of the following functions and draw its graph:

tan-1 x


 5

Write down the interval for the principal-value branch of each of the following functions and draw its graph:

sec-1 x


 6

Write down the interval for the principal-value branch of each of the following functions and draw its graph:

cosec-1 x