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MAXIMA AND MINIMA
The function f(x) is said to have attained its maximum value for x=a, if the function ceases to increase and begins to decrease at x= a. A function f(x) is said to have attained its minimum value for x= b, if the function ceases […]

FRICTION
The force that resists the motion of one surface over the another which it is in contact with is called friction.
For a body resting on a horizontal surface there is a normal contact force R between the body and the surface which acts perpendicular to the surface. Now if […]