Qn 1.

 

Qn 2.

Consider the curve = p+ q,where p and q are real numbers

1.Find at the point (2,3)

2.If y=4x-5 is the tangent to the curve at (2,3) then find the value of p and q

Qn 3.

The surface area S= of a spherical balloon changes with radius.

1.At what rate does the surface area changes w.r.t the radius

2.Using differentials find approximately how much does the surface area increase when the radius changes from 5cm to 5.2cm

Qn 4.

Consider the curve 2 -3 +27=0

1.Find the points on the curve at which the tangent is parallel to X axis

2.Show that = - ,y≠0