If f(x) = 1/(x-2), then composite function y = f[f{f(x)}] is continuous at the points....

1) 1,3/2,2

2) 2,5/2,12/5

3) 2,12/5,5

4) None of these

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.