Monotonicity Questions
174 Math questions for JEE Main & NEET.
The value of ′a′ for which the function f(x) = sin x - cosx - ax + b decreases for all real value of x, is -
View solutionLet f(x) be a quadratic expression which is positive for all real values of x. If g(x) = f(x) + f′(x) + f″x), then for any real x -
View solutionLet f(x) = Which of the following properties does f have on the interval (0, 6) ?I. ln f(x) exist; II. f is continuous III. f is monotonic...
View solutionThe length of largest continuous interval in which function f (x) = 4x - tan2x is monotonic, is -
View solutionThe true set of real values of x for which the function, f(x) = x ln x - x + 1 is positive is
View solutionRolle′s theorem in the indicated intervals will not be valid for which of the following function -
View solutionIf the function f(x) = 2x2 + 5 satisfies LMVT at x = 2 on the closed interval [1, a] then the value of ′a′ is equal to -
View solutionConsider the function f(x) = 8x2 - 7x + 5 on the interval [-6, 6]. The value of c that satisfies the conclusion of the mean value theorem, is -
View solutionLet f be a function which is continuous and differentiable for all real x. If f(2) = - 4 and f′(x) ≥ 6 for all x ∈ [2, 4] then
View solutionIf f(x) = x3 + 7x - 1 then f(x) has a zero between x = 0 and x = 1. The theorem which best describes this, is -
View solutionConsider f(x) = l 1 - x l , 1 ≤ x ≤ 2 and g(x) = f(x) + b sin π/2 x, 1 ≤ x ≤ 2 then which of the following is correct ?
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