5 JEE Main 2021 Basic of Mathematics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 previous-year questions from the Basic of Mathematics chapter of Mathematics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Basic of Mathematics chapter hub.
If for x ∈ 0 , π 2 , log 10 sin x + log 10 cos x = - 1 and log 10 sin x + cos x = 1 2 log 10 n - 1 , n >…
The number of solutions of the equation log 4 x - 1 = log 2 x - 3 is ______.
The number of solutions of the equation log ( x + 1 ) 2 x 2 + 7 x + 5 + log ( 2 x + 5 ) ( x + 1 ) 2 - 4 = 0 ,   x…
If A = { x ∈ R : | x - 2 | > 1 } , B = x ∈ R : x 2 - 3 > 1 , C = { x ∈ R : | x - 4 | ⩾…
The sum of the roots of the equation, x + 1 - 2 log 2 3 + 2 x + 2 log 4 10 - 2 - x = 0 , is :