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Recent questions tagged p20
Questions
Find the interval on which the function $ \large\frac{x}{log x}$ is increasing or decreasing.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q71
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
FInd the interval in which $f(x)=8+36x+3x^2-2x^3$ is increasing or decreasing.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q70
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
Find the interval in[0,2\pi] in which the function $ \Large\frac{-4.\sin x+2x+x \cos x}{2+\cos x}$ is increasing or decreasing.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q69
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
Find whether $ f(x)=\cos (2x+\pi/4)\:is\:increasing\:or\:decreasing\:in\:(\frac{3\pi}{8},\frac{5\pi}{8})$ .
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q68
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
Find the interval in which the function $f(x)=x^4-4x^3+4x^2+15$ is increasing or decreasing.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q67
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
Show that $ f(x)=3x^5+40x^3+240x$ is always increasing on R.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q66
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
Show that the function $f(x)=e^{2x}$ is strictly increasing on R.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q65
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
Water is passed into an inverted cone of base radius 5 cm and depth 10 cm at the rate of $\Large\frac{3}{2}$ c.c/sec. Find the rate at which the level of water is rising when depth is 4 cm.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q64
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
Gas is escaping from a spherical balloon at the rate of $900 cm^3$/sec. How fast is the surface area, radius of the balloon shrinking when the radius of the balloon is 30cm?
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q63
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
The surface area of a spherical bubble is increasing at the rate of $ 2 cm^2$/sec. Find the rate at which the volume of the bubble is increasing at the instant if its radius is 6 cm.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q62
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
The volume of a spherical balloon is increasing at the rate of $25\; cm^3$/sec. Find the rate of change of its surface area at the instant when the radius is 5 cm.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q61
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
A balloon which always remains spherical is being inflated by pumping in gas at the rate of $900\; cm^3$/sec. Find the rate at which the radius of the balloon is increasing when the radius of the balloon is 15 cm
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q60
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
An edge of a variable cube is increasing at the rate of 5 cm/sec. How fast is the volume of the cube is increasing when edge is 10cm long?
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q59
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
A man 160 cm tall walks away from a source of light situated at the top of the pole 6m high at the rate of 1.1 m/sec. How fast is the length of the shadow increasing when he is 1m away from the pole.
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q58
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
Sand is pouring from a pipe at the rate of 12cm3/sec. The falling sand forms a cone on the ground in such a way that the height of the cone is always one-sixth of the radius of the base. How fast is the height of the sand cone in increasing when the height is 4 cm?
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q57
p20
math
asked
Jan 29, 2013
by
meena.p
0
answers
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