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Recent questions tagged p138
ASK
The curve $y=x^\frac{1}{5}$ has at
cbse
class12
ch6
q37
p138
objective
exemplar
easy
sec-a
math
asked
Jan 11, 2013
by
sreemathi.v
1
answer
A ladder, 5 meter long,standing on a horizontal floor,leans against a vertical wall.If the top of the ladder slides downwards at the rate of 10cm/sec,then the rate at which the angle between the floor and the ladder is decreasing when lower end of ladder is 2 meters from the wall measure in "radian/seconds" is?
cbse
class12
ch6
q36
p138
objective
exemplar
medium
sec-a
math
asked
Jan 11, 2013
by
sreemathi.v
1
answer
The sides of an equilateral triangle are increasing at the rate of 2cm/sec.The rate at which the area increases ,when side is 10cm is
cbse
class12
ch6
q35
p138
objective
exemplar
easy
sec-a
math
asked
Jan 11, 2013
by
sreemathi.v
1
answer
The sum of the surface area of a rectangular parallelepiped with sides x,2x and $\Large\frac{x}{3}$ and a sphere is given to be constant.Prove that the sum of their volume is minimum,if x is equal to three times the radius of the sphere.Also find the minimum value of the sum of their volumes.
cbse
class12
ch6
q34
p138
exemplar
math
sec-c
asked
Jan 11, 2013
by
sreemathi.v
0
answers
A metal box with a square base and vertical sides is to contain 1024$cm^3$.The material for the top and bottom costs Rs 5/$cm^2$ and the material for the sides costs Rs2.50/$cm^2$.Find the least cost of the box.
cbse
class12
ch6
q33
p138
exemplar
math
sec-c
asked
Jan 11, 2013
by
sreemathi.v
0
answers
AB is a diameter of a circle and C is any point on the circle.Show that the area of $\bigtriangleup ABC$ is maximum,when it is isosceles.
cbse
class12
ch6
q32
p138
exemplar
difficult
sec-c
math
asked
Jan 11, 2013
by
sreemathi.v
1
answer
If the sum of the surface areas of cube and a sphere is constant.What is the ratio of an edge of the cube to the diameter of the sphere,when the sum of their volumes is minimum?
cbse
class12
ch6
q31
p138
exemplar
difficult
sec-c
math
asked
Jan 11, 2013
by
sreemathi.v
1
answer
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