JEE Main2002MathematicsTrigonometric EquationsActual
The number of solution of x+ x=2 x in [0,2 ) is
Options
- A2
- B3
- C0
- D1
Correct answer
B. 3
Step-by-step solution
The given equation is x+ x=2 x x+1=2 ^2 x aligned & x+1=2 (1- ^2 x ) 2 ^2 x+ x-1=0 & (2 x-1)( x+1)=0 x= 1 2 ,-1 x=30^ , 150^ , 270^ aligned