Jee Main
Trigonometric Functions And Equations
JEE Main 2022 (Online) 29th July Evening Shift
MCQ+4 / -12022
The number of elements in the set \(S = \left\{ {x \in R:2\cos \left( {{{{x^2} + x} \over 6}} \right) = {4^x} + {4^{ - x}}} \right\}\) is equal to :
