Hi Sasidhar,

If you could submit the whole equation then I can help you better with the solution. Until then, I am writing the solution of a similar question through which you can get help in your questions of similar types.

Let the function be f(x)

f(x) = 9x^4 + 12x^3 - 36x^2 + 25

f(x) = 36x^3 + 36x^2 - 72

f(x) = 36x ( x^2 + x - 2)

f(x) = 36x (x+2) (x-1)

Minima = -2 , Maxima = 0 , Minima = 1

S1 = -2 ,1

S2 = 0