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MHT CET · Maths · Application of Derivatives

If fx=3x3-9x2-27x+15, then the maximum value of fx is ________

  1. A -66
  2. B 30
  3. C -30
  4. D 66
Verified Solution

Answer & Solution

Correct Answer

(B) 30

Step-by-step Solution

Detailed explanation

If f(x)=3x3-9x2-27x+15
f'x=9x2-2x-3=9x-3x+1
fx maximum at x=-1f-1=-3-9+27+15=30