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MHT CET · Maths · Application of Derivatives

The approximate value of fx =x3+5x2-7x+9 at x=1.1 is

  1. A 8.6
  2. B 8.5
  3. C 8.4
  4. D 8.3
Verified Solution

Answer & Solution

Correct Answer

(A) 8.6

Step-by-step Solution

Detailed explanation

fx+h=fx+h f'x
Here, x=1, h=0.1, f'x=3x2+10x-7
f1+0.1=f1+0.1 ×f'(1)
=8+0.1 ×6
=8.6