Application of DerivativeHard
Question
Water is dripping out from a conical funnel of semi-vertical angle 
at the uniform rate of 2 cm3/sec in its surface area through a tiny hole at the vertex in the bottom. When the slant height of the water is 4 cm, then the rate of decrease of the slant height of the water, is -
at the uniform rate of 2 cm3/sec in its surface area through a tiny hole at the vertex in the bottom. When the slant height of the water is 4 cm, then the rate of decrease of the slant height of the water, is - Options
A.
cm / sec
cm / secB.
cm / sec
cm / secC.
cm / sec
cm / secD.
cm / sec
cm / secMore Application of Derivative Questions
The length of the tangent at any point to the curve x2/3 + y2/3 = a2/3 which is intercepted between the axes, is-...The function f(x) is...The surface area of a cube is increasing at the rate of 2 cm2/sec. When its edge is 90 cm, the volume is increasing at t...The angle made by the tangent to the curve x = et cos t, y = et sin t at point t = π/4 with x-axis is -...-The equation of normal to the curve y = x3 - 2x2 + 4 at the point x = 2 is-...