RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 1 of Exercise 4.2

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1

Find the domain of definition of f(x) = cos–1(x2–4).

Domain of lies in the interval [–1, 1].


Therefore, the domain of cos–1(x2 – 4) lies in the interval [–1, 1].


–1 1


3 5



and


Domain of is


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