Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The number of real solutions of the equation x 3 + 1 = 2 
, is :
Text Solution
Verified by ExpertsThe correct answer is:
3
(3)
Ans. x = 1, 
Sol. 
= 2 
Let f(x) = 
⇒ f – 1 (x) = 
Equation becomes f(x) = f – 1 (x)
⇒ f(x) = x ⇒ 
= x ⇒ x 3 – 2x + 1 = 0
⇒ (x – 1) (x 2 + x – 1) = 0 ⇒ x = 1, 
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