Book: RD Sharma - Mathematics (Volume 1)
Chapter: 4. Inverse Trigonometric Functions
Subject: Maths - Class 12th
Q. No. 3 of Exercise 4.11
Listen NCERT Audio Books to boost your productivity and retention power by 2X.
3
Solve the following equations for x:
Given:- 
Take
We know that, Formula
Thus,
⇒ 
⇒ 
⇒ 
⇒ 
We know that, Formula
Thus,
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 4x – x3 = 6x – 9x3
⇒ 9x3 – x3 + 4x – 6x = 0
⇒ 8x3 – 2x = 0
⇒ 2x(4x2 – 1) = 0
⇒ 
All satisfies x value
So,
is the root of the given equation
Therefore,
