a distribution consists of three components with frequencies 200,250 and 300 having means of 25,10 and 15 and standard deviations of 3,4 and 5 respectively.find combined coefficient of variation.

• Can I do direct
  

Skew line 11.2 16

Resolve into partial fraction x^4/x^2-3x+2

 second last question sir

From a quadratic equation whose roots are squares of roots of quadratic equation 5 x square - 2 x 1

12.1 2question

is coming under the group