JEE Questions for Maths Applications Of Derivatives Quiz 4 - MCQExams.com


Maths-Applications of Derivatives-9219.png
  • Statement I is correct, Statement II is also correct; Statement II is the correct explanation of Statement I
  • Statement I is correct, Statement II is also correct; Statement II is not the correct equation of Statement I
  • Statement I is correct, statement II is correct
  • Statement I is incorrect, Statement II is correct
The equation of the tangent of the curve y = x + 4/x2 that is parallel to the X - axis is
  • y = 0
  • y = 1
  • y = 2
  • y = 3
The point in the interval [0, 2π], where f(x) = ex sin x has maximum slope is
  • π/4
  • π/2
  • π
  • 3π/2
The point on the curve x2 + y2 = a2, y ≥ 0 at which the tangent is parallel to X - axis is
  • (a, 0)
  • (-a, 0)

  • Maths-Applications of Derivatives-9223.png
  • (0, a)
  • (0, a2)
The angle between the curves y = x2 and y2 - x = 0 at the point (1,is
  • π/2
  • tan-1 4/3
  • π/3
  • π4
  • tan-1 3/4
The distance between the origin and the normal to the curve y = e2x + x2 at x = 0 is
  • 2
  • 2/√3
  • 2/√5
  • 1/2
  • 1/√5
Let P(x) = x4 + ax3 + bx2 + cx + d such that x = 0 is the only real root of P'(x) = 0. If P(-1), then in the interval [-1, 1]
  • P(-is the minimum and P(is the maximum of P
  • P(-is not minimum but P(is the maximum of P
  • P(-is minimum and P(is not maximum of P
  • Neither P(-is the minimum and P(nor is the maximum of P
The shortest distance between the line y - x = 1 and the x = y2 is

  • Maths-Applications of Derivatives-9228.png
  • 2)
    Maths-Applications of Derivatives-9229.png

  • Maths-Applications of Derivatives-9230.png

  • Maths-Applications of Derivatives-9231.png
The equation of the tangent to the curve y = 4ex at (-1, -4/e) is
  • y = - 1
  • - (4/e)
  • x = - 1
  • x = -4/e

Maths-Applications of Derivatives-9234.png
  • 16
  • 12
  • 8
  • 4
  • 2
The equation of the tangent to the curve y = 4e-x/4 at the point, where the curves crosses Y - axis is equal to
  • 3x + 4y = 16
  • 4x + y = 4
  • x + y = 4
  • 4x - 3y = -12
  • x - y = -4
The angle between the curves y = ax and y = bx is equal to

  • Maths-Applications of Derivatives-9237.png
  • 2)
    Maths-Applications of Derivatives-9238.png

  • Maths-Applications of Derivatives-9239.png

  • Maths-Applications of Derivatives-9240.png

  • Maths-Applications of Derivatives-9241.png
If a and b are positive numbers such that a > b, then the minimum value of a sec θ - b tan θ (where, 0 < θ < π/is

  • Maths-Applications of Derivatives-9243.png
  • 2)
    Maths-Applications of Derivatives-9244.png

  • Maths-Applications of Derivatives-9245.png

  • Maths-Applications of Derivatives-9246.png

  • Maths-Applications of Derivatives-9247.png
The angle between y2 = x and x2 = y at the origin is
  • 2 tan-1 (3/4)
  • tan-1 (4/3)
  • π/2
  • π/4
The length of the normal to the curve x = a(θ + sin θ), y = a(1 - cos θ) at θ = π/2 is
  • 2a
  • a/2
  • a/√2
  • √2a
The smallest circle with centre on Y - axis and passing through the point (7,has radius
  • √58
  • 7
  • 3
  • 4
If sum of two numbers is 6, then the minimum value of the sum of their reciprocals is
  • 6/5
  • 3/4
  • 2/3
  • 1/2
The function f(x) = x3 + ax2 + bx + c, a2 ≤ 3b has
  • one maximum value
  • one minimum value
  • no extreme value
  • one maximum and one minimum value
If f(x) = x2 + 4x + 1, then
  • f(x) = f(-x), ∀ x
  • f(x) ≠ 1, ∀ x = 0
  • f ''(x) > 0, ∀ x
  • f(x) > 1, for x ≤ 4
If the cubic equation x3 - px + q has three distinct real roots, where p > 0 and q < 0. Then, which one of the following is correct ?

  • Maths-Applications of Derivatives-9256.png
  • 2)
    Maths-Applications of Derivatives-9257.png

  • Maths-Applications of Derivatives-9258.png

  • Maths-Applications of Derivatives-9259.png
The slope of the tangent to the curves x = t2 + 3t - 8, y = 2t2 -2t - 5 at the point (2, -is
  • 22/7
  • 6/7
  • -6
  • -7

Maths-Applications of Derivatives-9262.png
  • 1
  • 2/e
  • e
  • 1/e

Maths-Applications of Derivatives-9264.png
  • x = 0
  • x = 1
  • x = 4
  • x = 3
If m and M respectively denote the minimum and maximum of f(x) = (x - 1)2 + 3 for x ϵ [-3, 1], then the ordered pair (m, M) is equal to
  • (-3, 9)
  • (3, 19)
  • (-19, 3)
  • (-19, -3)
The length of the subtangent at (2,to the curve x5 = 2y4 is
  • 5/2
  • 8/5
  • 2/5
  • 5/8
The equation of the normal to the curve y4 = ax3 at (a, a) is
  • x + 2y = 3a
  • 3x - 4y + a = 0
  • 4x + 3y = 7a
  • 4x - 3y = 0
If y = 4x - 5 is a tangent to the curve y2 = px3 + q at (2, 3), then
  • p = 2, q = -7
  • p = - 2, q = 7
  • p = -2, q = -7
  • p = 2, q = 7

Maths-Applications of Derivatives-9270.png
  • a local maxima at x = 1 and a local minima at x = - 1
  • a local minima at x = 1 and a local maxima at x = - 1
  • absolute maxima at x = 1 and absolute minima at x = -1
  • absolute minima at x = 1 and absolute maxima at x = -1
The normal to a curve at P(x, y) meets the X - axis at G. If the distance of G from the origin is twice the abscissa of P, then the curve is a
  • ellipse
  • parabolla
  • circle
  • hyperbola
The minimum value of 2x + 3y, when xy = 6 is
  • 9
  • 12
  • 8
  • 6
If the function f(x) = x2 e-2x, x > 0. Then, the maximum value of f(x) is
  • 1/e
  • 1/2e
  • 1/e2
  • 4/e4
The angle between the tangents at those points on the curve x = t2 + 1 and y = t2 - 1 - 6, where it meets X - axis is

  • Maths-Applications of Derivatives-9275.png
  • 2)
    Maths-Applications of Derivatives-9276.png

  • Maths-Applications of Derivatives-9277.png

  • Maths-Applications of Derivatives-9278.png
If the function f(x) = 2x3 - 9ax2 + 12a2x + 1 attains its maximum and minimum at p and q respectively, such that p2 = q, then a equals
  • 0
  • 1
  • 2
  • None of these
The point on the curve y2 = x, the tangent at which makes an angle 45o with X - axis is

  • Maths-Applications of Derivatives-9281.png
  • 2)
    Maths-Applications of Derivatives-9282.png

  • Maths-Applications of Derivatives-9283.png

  • Maths-Applications of Derivatives-9284.png
A missile is fired from the ground level rises x metres vertically upwards in t sec, where x = 100t - (25/2)t2. The maximum height reached is
  • 200 m
  • 125 m
  • 190 m
  • 300 m
The maximum slope of the curve y = x + 3x2 + 2x - 27 is
  • 5
  • -5
  • 1/5
  • None of these

Maths-Applications of Derivatives-9288.png
  • - (1/3)
  • - (1/4)
  • 1/4
  • 1/6

Maths-Applications of Derivatives-9290.png
  • (b, a)
  • (-b, -a)
  • (a, b)
  • None of these
The length of tangent, subtangent, normal and subnormal for the curve y = x2 + x - 1 at (1,are A, B C and D respectively, then their increasing order is
  • B, D, A, C
  • B, A, C, D
  • A, B, C, D
  • B, A, D, C
The condition f(x) = x3 + px2 + qx + r (x ϵ R) to have no extreme value, is
  • p2 < 3q
  • 2p2 < q
  • p2 < 1/4q
  • p2 > 3q

Maths-Applications of Derivatives-9294.png
  • Both A and R are correct and R is the correct reason for A
  • Both A and r correct but R is not the correct reason for A
  • A is correct, R is incorrect
  • A is incorrect, R is correct

Maths-Applications of Derivatives-9296.png
  • 3
  • 1/3
  • 2
  • 1/2
On the interval [0, 1], the function x25 (1 - x)75 takes its maximum value at the point
  • 0
  • 1/4
  • 1/2
  • 1/3

Maths-Applications of Derivatives-9299.png
  • a local maximum
  • a local minimum
  • no local extremum
  • no local maximum

Maths-Applications of Derivatives-9301.png
  • x = - 2
  • x= 0
  • x = 1
  • x = 2
Angle between the tangents to the curve y = x2 - 5x + 6 at the points (2,and (3,is
  • π/2
  • π/6
  • π/4
  • π/3
If the curve y = 2x3 + ax2 + bx + c passes through the origin and the tangent drawn to it at x = - 1 and x = 2 are parallel to the X - axis, then the values of a, b and c are respectively
  • 12, -3 and 0
  • -3, -12 and 0
  • -3, 12 and 0
  • 3, -12 and 0
The tangent and the normal drawn to the curve y = x2 - x + 4 at P(1,cut the X - axis at A and B, respectively. If the length on the subtangent drawn to the curve at P is equal to the length of the subnormal, then the area of the ∆PAB(in sq units) is
  • 4
  • 32
  • 8
  • 16
If the line ax + by + c = 0 is a normal to the curve xy = 1, then
  • a > 0, b > 0
  • a > 0, b < 0
  • a < 0, b < 0
  • Data is insufficient
The maximum value of x1/x is
  • 1/ee
  • e
  • e1/e
  • 1/e
0:0:1


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