The value of c in Rolle’s theorem for the function

The rate of change (in cm^²/s) of the total surface area of a hemisphere with respect to rad r at cm is:

Choose the correct answer from the options given below:

The function f(x)=|x-1| is strictly increasing in the interval.

The function

The length of a simple pendulum is decreased by 21%. The percentage change in its time period is :

For which values of f(x)=a(x+sinx) is an increasing function?

The equation of the normal to the curve

The interval in which the function is decreasing is:

The interval in which the f(x)=sinx-cosx, 0≤x≤2π is strictly decreasing is: