RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 3 of Exercise 4.11

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3

Solve the following equations for x:

,


Given:-


Take



We know that, Formula



Thus,






2x2 – 8 + 2 = 12


2x2 = 18



Since,


x < –√3 or x > √3


So,


x= +3, –3 is the root of the given equation


Therefore,


x= +3, –3


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