MathsMaths QuestionsFunctions Questions for CBSE Class 11th

Functions Questions for CBSE Class 11th

The solution set of the inequality | x + 2 | − x x < 2 is

If 8 f ( x ) + 6 f 1 x = x + 5 and y = x 2 f ( x ) , then d y d x at x = − 1 is equal to

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    Number of integral roots of | x − 1 | x 2 − 2 = 2 is

    The value of log 3 ⁡ 135 log 15 ⁡ 3 − log 3 ⁡ 5 log 405 ⁡ 3 is

    Complete set of values of x satisfying inequality | | x − 1 | − 5 | < 2 x − 5 is

    If − 4 ≤ x < 2 then | | x + 2 | − 3 | liesintheinterval

    If function f and g given by f ( x ) = log ⁡ ( x − 1 ) − log ⁡ ( x − 2 ) and g ( x ) = log ⁡ x − 1 x − 2 are equal then x lies in the interval

    The domain of the function f ( x ) = 4 − x 2 [ x ] + 2 where [x] denotes the greatest integer less than or equal to x, is

    The domain of definition of f ( x ) = log x ⁡ cos ⁡ x , is ( 0 , π / 2 ) − { k } then k is

    If g x = x 2 + x − 1 and g   o   f x = 4 x 2 − 10 x + 5 , then f 5 4 is equal to

    Let f x = x – 2 and g ( x ) = f ( f ( f … … ( f ( x ) ) ) … ) ⏟ ( n times ) . If equation g x = k , k ∈ 0 , 2 has 8 distinct solutions than value of n is equal to

    The number of points on the real line where the function f(x) = log x 2 – 1 x – 3 is not defined is

    If a 2 + b 2 + c 2 = 1 , then a b + b c + c a lies in the interval

    If x , y and z are real and different and u = x 2 + 4 y 2 + 9 z 2 − 6 y z − 3 z x − 2 x y , then u is always

    Number of solutions of equation 4 x − 3 x − 1 2 = 3 x + 1 2 − 2 2 x − 1 is

    Solution set of inequality log 1 / 2 ⁡ x + log 3 ⁡ x > 1 is

    The solution set of the equation x log x ⁡ ( 1 − x ) 2 = 9 , is

    Number of integers less than or equal to 10 satisfying the inequality 2 log 1 / 2 ⁡ ( x − 1 ) ≤ 1 3 − 1 log x 2 − x ⁡ 8 is

    The value of 5 log 1 / 5 ⁡ ( 1 / 2 ) + log 2 ⁡ 4 7 + 3 + log 1 / 2 ⁡ 1 10 + 2 21 is

    The least integral value of x satisfying the equation ∣ x 2 − 1 + log ⁡ x | = | x 2 − 1 | + | log ⁡ x ∣ is

    If x , y , z are positive real numbers such that log 2 x ⁡ z = 3 , log 5 y ⁡ z = 6 and log x y ⁡ z = 2 / 3 then the value of ( 1 / 2 z ) is

    Number of integers satisfying log x ⁡ 4 x + 5 6 − 5 x < − 1 is

    Suppose a , b and c are positive integers with a < b < c such that 1 a + 1 b + 1 c = 1 . The value of ( a + b + c ) is

    The value of N = log 5 ⁡ 250 log 50 ⁡ 5 − log 5 ⁡ 10 log 1250 ⁡ 5 is

    I f f ( x ) = sin 2 x + cos 4 x cos 2 x + sin 4 x , t h e n f 2020 =

    The function f satisfies the functional equation 3 f ( x ) + 2 f x + 59 x − 1 = 10 x + 30 for all real x ≠ 1 . The value of f ( 7 ) is

    If the graph of y =f(x) is symmetrical about the lines x = 1 and x = 2, then which of the following is true?

    The complete solution set of inequality ( x − 5 ) 1005 ( x + 8 ) 1008 ( x − 1 ) x 1006 ( x − 2 ) 3 ( x − 3 ) 5 ( x − 6 ) ( x + 9 ) 1010 ≤ 0 is

    Number of integral values of x satisfying the inequality x 2 + 6 x − 7 | x + 2 | | x + 3 | < 0 is

    Number of solutions of the equation | 2 − | x ∥ = x + 4 is

    The complete solution set of the equation x 2 − 5 x + 6 + x 2 + 12 x + 27 = | 17 x + 21 | is

    If x 2 − 2 x + 2 − 2 x 2 − 5 x + 2 = x 2 − 3 x , then the set of values of x is

    7 log 16 15 + 5 log 25 24 + 3 log 81 80 is equal to

    If log 4 5 = a and log 5 6 = b , then log 2 3 is equal to

    If a x = b , b y = c , c z = a , then value of xyz is

    Let f ( n ) = 1 + 1 2 + 1 3 + … + 1 n , then ( f ( 1 ) + f ( 2 ) + f ( 3 ) + … + f ( n )

    If f ( x ) = 5 x 5 + 5 x , then the value of f 1 20 + f 2 20 + … + f 39 20 is

    If f ( x ) = log [ x − 1 ] ⁡ | x | x , where [.] denotes the greatest integer function, then

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