Find M.D(median) for the following frequency distribution [marks:0-10,10-20,20-30,30-40,40-50][No. of students:5,8,15,16,6]
Sec X+tan X=a then find cosec X
Differentiate 〖tan^(-1) (〗〖(√(1+x^2 )-1)/x〗) w.r.to x.
Differentiate tan-1 (root 1+x2)-1/x