if f(X)= 1-sinx. log sinx/[(Π - 2x)^2 (log(1+Π^2 - 4Πx + 4x^2))] , x is not equal to Π/2

k x=Π/2

is continuos at x= Π/2 then k=?

the diameter of a roller is 84 cm and its length is 120 cm. it takes 500 complete revolution to  move once over to level a playground. find the area of the playground in square m?

Find dy/DX when y=x^sinx+sin-1√x.

 

Please give me the solution of this problem. 

Solve the differential equation y’’+2ty’-4y=1, y(0)=y’(0)=0.