JEE Mathematics Application of Derivatives MCQs Set F

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MCQ for Full Syllabus Mathematics Application of Derivatives

Full Syllabus Mathematics students should refer to the following multiple-choice questions with answers for Application of Derivatives in Full Syllabus.

Application of Derivatives MCQ Questions Full Syllabus Mathematics with Answers

 

 

Question: The function f(x) = x4 – 62x2 + ax + 9 attains its maximum value on the interval [0, 2] at x = 1. Then the value of a is:

  • a) 120
  • b) 52
  • c) –120
  • d) None of these.

Answer: 120

 

Question:

  • a) 10
  • b) 12
  • c) 11
  • d) 9

Answer: 10

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question: The maximum area of rectangle inscribed in a circle of diameter R is:

  • a) R2/2
  • b) R2/8
  • c) R2
  • d) R2/4

Answer: R2/2

 

Question: If sum of two numbers is 3, the maximum value of the product of first and the square of second is:

  • a) 4
  • b) 2
  • c) 3
  • d) 1

Answer: 4

 

Question: Given P(x) = x4 + ax3 + bx2 + cx + d such that x = 0 is the only real root of P¢(x) = 0. If P(–1) < P(1), then in the interval [ –1, 1] :

  • a) P(–1) is not minimum but P(1) is the maximum of P
  • b) P(–1) is the minimum but P(1) is not the maximum of P
  • c) Neither P(–1) is the minimum nor P(1) is the maximum of P
  • d) P(–1) is the minimum and P(1) is the maximum of P

Answer: P(–1) is not minimum but P(1) is the maximum of P

 

Question: If a, b, c are natural numbers and ax4- bx3 +cx2 -bx+a/ (x2+1)2 attains minimum value at x=2 or x= 1/2  then the least possible values of a, b, c are respectively

(1) 1, 4, 7 (2) 1, 8, 12
(3) 2, 4, 9 (4) 1, 2, 3

  • a) 1, 2 and 3 are correct
  • b) 2 and 4 are correct
  • c) 1 and 2 are correct
  • d) 1 and 3 are correct

Answer: 1, 2 and 3 are correct

 

Question:

1) local maximum, if n is odd
(2) local maximum, if n is even
(3) local minimum, if n is even.
(4) local minimum, if n is odd

  • a) 1 and 3 are correct
  • b) 1 and 2 are correct
  • c) 1, 2 and 3 are correct
  • d) 2 and 4 are correct

Answer: 1 and 3 are correct

 

Question:

(1) minimum at x = 2 if n is even
(2) minimum at x = 1 if n is odd
(3) maximum at x = 1 if n is odd
(4) minimum at x = 1 if n is prime

  • a) 1 and 3 are correct
  • b) 1 and 2 are correct
  • c) 1, 2 and 3 are correct
  • d) 2 and 4 are correct

Answer: 1 and 3 are correct

 

Question: Let f (x) = e(p+1) x – ex for real number p > 0.

The value of x for which f (x) is minimum, is

  • a)

  • b) – ln (p + 1)
  • c) – ln p
  • d) None of these

Answer:

 

Question: Let f (x) = e(p+1) x – ex for real number p > 0.

  • a)

  • b)

  • c)

  • d) None of these

Answer:

 

 

Question: Let f (x) = e(p+1) x – ex for real number p > 0.

  • a) 1/2
  • b) does not exists
  • c) 0
  • d) 1

Answer: 1/2

 

Question:

Statement 1 : Among all the rectangles of given perimeter, the square has the largest area. Also among all the rectangles of given area, the square has the least perimeter.

Statement 2 : For x > 0, y > 0, if x + y = const, then xy will be maximum for y = x and if xy = const., then x + y will be minimum for y = x.

  • a) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
  • b) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • c) Statement -1 is False, Statement-2 is True.
  • d) Statement -1 is True, Statement-2 is False.

Answer: Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

 

Question:

Statement 1 : If f (x) = (x – 3)3, then f (x) has neither maximum nor minimum at x = 3
Statement 2 : f ' (x) = 0, f '' (x) = 0 at x = 3.

  • a) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
  • b) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • c) Statement -1 is False, Statement-2 is True.
  • d) Statement -1 is True, Statement-2 is False.

Answer: Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

 

Question:

Statement 1 : If f (x) = max {x2 – 2x + 2, | x – 1 |}, then the greatest value of f (x) on the interval [0, 3] is 5.
Statement 2 : Greatest value of f (3) = max. {5, 2} = 5.

  • a) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • b) Statement -1 is False, Statement-2 is True.
  • c) Statement -1 is True, Statement-2 is False.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.

 

More Questions..................................

 

Question: The interval in which the function x2e-x is non decreasing, is

  • a) [0,2]
  • b) (-∞,0]
  • c) None of these
  • d) [2,∞)

Answer: [0,2]

 

Question:

  • a) Decreasing
  • b) Increasing
  • c) Neither increasing nor decreasing
  • d) Increasing for x > 0 and decreasing for x < 0

Answer: Decreasing

 

Question: The values of 'a ' for which the function (a + 2)x3 - 3ax2 + 9ax –1 decreases monotonically throughout for all real x , are

  • a) -∞ < a ≤ -3
  • b) 33 < a < 0
  • c) a < – 2
  • d) a > – 2

Answer: -∞ < a ≤ -3

 

Question:

  • a) Increases in [0,∞)
  • b) Decreases in [0,∞)
  • c) Neither increases nor decreases in [0,∞)
  • d) Decreases in (-∞,∞)

Answer: Increases in [0,∞)

 

Question:

  • a) f(x) is an increasing function
  • b) g(x) is an increasing function
  • c) Both f(x) and g(x) are decreasing functions
  • d) Both f(x) and g(x) are increasing functions

Answer: f(x) is an increasing function

 

Question: The function which is neither decreasing nor increasing in

  • a) cosec x
  • b) x2
  • c) tan x
  • d) None of these

Answer: cosec x

 

Question: The function f (x) = sin4 x + cos4 x increases if :

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a) –2
  • b) 0
  • c) –1
  • d) –3

Answer: –2

 

Question:

  • a)

  • b)

  • c)

  • d)

Answer:

 

Question:

  • a) 0
  • b)

  • c)

  • d) None of these

Answer: 0

 

Question: y = [x (x – 3)]2 increases for all values of x lying in which of the following interval?

  • a) 0 < x <3/2
  • b) 0 < x < ∞
  • c) 1 < x < 3
  • d) None of these

Answer: 0 < x <3/2

 

Question: From Mean value theorem f(b) – f(a) = (b – a) f ' (x1) where a < x1 < b and f(x) =1/x then x equal to:

  • a) √ab
  • b) 2ab/a +b
  • c) b-a/b+a
  • d) a+b/2

Answer: √ab

 

Question: The interval in which the function f(x) 4x2+1/x is decreasing is

  • a)

  • b)

  • c) (–1, 1)
  • d) [–1, 1]

Answer:

 

Question: If a < 0, the function f (x) = eax + e–ax is a monotonically decreasing function for values of x given by :

  • a) x < 0
  • b) x < 1
  • c) x > 0
  • d) x > 1

Answer: x < 0

 

Question: If the function f : R→R is defined by f (x) = tan x – x, then f '(x) is :

  • a) increases
  • b) constant
  • c) decreases
  • d) none of these

Answer: increases

 

Question: The value of b for which the function f (x) = sin x – bx + c is decreasing in the interval (-∞,∞) is given by

  • a) b > 1
  • b) b < 1
  • c) b ≥1
  • d) b ≤ 1

Answer: b > 1

 

Question: If f (x) = 3x4 + 4x3 – 12x2 + 12, then f (x) is

  • a) increasing in ( – 2, 0) and in (1, ∞)
  • b) decreasing in ( – 2, 0) and in (0,1)
  • c) decreasing in ( – ∞ , – 2) and in (1, ∞)
  • d) increasing in (– ∞ , – 2) and in (0, 1)

Answer: increasing in ( – 2, 0) and in (1, ∞)

 

Question: If f (x) = xex(1–x) , then f (x) is

  • a) increasing in [–1/2, 1]
  • b) increasing in R
  • c) decreasing in R
  • d) decreasing in [–1/2, 1]

Answer: increasing in [–1/2, 1]

 

Question: Let f (x) and g(x) be differentiable for 0 ≤ x ≤ 1, such that f( 0) = 0, g (0) = 0, f(1) = 6. Let there exist a real number c in (0, 1) such that f'(c) = 2 g'(c) , then the value of g (1) is

  • a) 3
  • b) 0
  • c) –3
  • d) None of these

Answer: 3

 

Question:

  • a) loge (1 + x) < x
  • b) loge x > x
  • c) ex < 1 + x
  • d) sin x > x

Answer: loge (1 + x) < x

 

Question:

  • a) 1 and 2 are correct
  • b) 1 and 3 are correct
  • c) 1, 2 and 3 are correct
  • d) 2 and 4 are correct

Answer: 1 and 2 are correct

 

Question:

  • a) 1 and 2 are correct
  • b) 1 and 3 are correct
  • c) 1, 2 and 3 are correct
  • d) 2 and 4 are correct

Answer: 1 and 2 are correct

 

Question:

(1) 1 (2) 2
(3) 3 (4) 4

  • a) 2 and 4 are correct
  • b) 1, 2 and 3 are correct
  • c) 1 and 2 are correct
  • d) 1 and 3 are correct

Answer: 2 and 4 are correct

 

Question:

  • a) Statement -1 is False, Statement-2 is True.
  • b) Statement -1 is True, Statement-2 is False
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement -1 is False, Statement-2 is True.

 

Question:

Statement 1 : If g (x) is a differentiable function. g (1) ≠ 0, g (–1) ≠ 0 and Rolles theorem is not applicable to f (x) = x2-1/g(x) in [–1,1], then g (x) has atleast one root in (–1, 1).

  • a) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • b) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
  • c) Statement -1 is False, Statement-2 is True.
  • d) Statement -1 is True, Statement-2 is False.

Answer: Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.

 

Question:

Statement 1 : If f (x) is increasing function with concavity upwards, then concavity of f–1 (x) is also upwards.
Statement 2 : If f (x) is decreasing function with concavity upwards, then concavity of f–1 (x) is also upwards.

  • a) Statement -1 is True, Statement-2 is False
  • b) Statement -1 is False, Statement-2 is True.
  • c) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
  • d) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Answer: Statement -1 is True, Statement-2 is False

MCQs for Application of Derivatives Mathematics Full Syllabus

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