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Ex 6.2, 12 Which of the following functions are strictly decreasing on (0,๐œ‹/2) ? (D) tan ๐‘ฅf(๐‘ฅ) = tan ๐‘ฅ fโ€™(๐’™) = sec2 ๐’™ As square of any number is always positive So, fโ€™(๐‘ฅ) > 0 for all values of ๐‘ฅ โˆด f is strictly increasing on (0 , ๐œ‹/2)

  1. Chapter 6 Class 12 Application of Derivatives
  2. Serial order wise

About the Author

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo