Applications of Derivatives  MCQs

MCQs of Applications of Derivatives

Showing 101 to 110 out of 266 Questions
101.
Maximum value of x2logx in [1, e] is _____
(a) e2
(b) 1elog1e
(c) e2loge
(d) none of these
Answer:

Option (a)

102.
Maximum value of fx=14x2+2x+1 is _____
(a) 43
(b) 23
(c) 1
(d) 34
Answer:

Option (a)

103.
If A+B=π2 then maximum value of cosA cosB is _____
(a) 12
(b) 34
(c) 1
(d) 43
Answer:

Option (a)

104.
fx=sinx1+cosx is maximum at _____
(a) x=π2
(b) x=π6
(c) x=π3
(d) x=π
Answer:

Option (c)

105.
Maximum value of is 4ex+9e-2x is _____
(a) 11
(b) 12
(c) 10
(d) 14
Answer:

Option (b)

106.
Minimum value of is 27cos2x81sin2x is _____
(a) 1243
(b) 127
(c) -5
(d) 15
Answer:

Option (a)

107.
The intercepts on x - axis made by tangents to the curve, y=0xtdt, xR, which are parallel to the line y = 2x are equal to :
(a) ±3
(b) ±2
(c) ±4
(d) ±1
Answer:

Option (d)

108.
If the surface area of a sphere of radius r is increasing uniformly at the rate 8 cm2/s , then the rate of change of its volume is :
(a) constant
(b) proportional to r
(c) proportional to r2
(d) proportional to r
Answer:

Option (d)

109.
The maximum area of a right angled triangle with hypotenuse h is :
(a) h322
(b) h22
(c) h22
(d) h24
Answer:

Option (d)

110.
If the curves x2α+y24=1 and y3 = 16x intersect at right angles, then a value of α is
(a) 2
(b) 43
(c) 12
(d) 34
Answer:

Option (b)

Showing 101 to 110 out of 266 Questions