Q. 104.0( 1 Vote )

If f(x) = 4x – x2, x R, then write the value of f(a + 1) – f(a – 1).

Answer :

f(a+1)-f(a-1) =[4(a+1) -(a+1)2]-[4(a-1)-(a-1)2 ]

=4[(a+1) -(a-1)]- [ (a+1)2 -(a+1)2]

=4(2)-[(a+1+a-1) (a+1-a+1)]

Using: a2 -b2= (a + b)(a-b)



Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Trigonometric Functions - 0568 mins
Trigonometric Functions - 0152 mins
Conditional IdentitiesFREE Class
Trigonometric Functions - 0658 mins
Questions Discussion of BiomoleculesFREE Class
Trigonometric Functions - 0366 mins
Let's Play the Game of Inequalities52 mins
Trigonometric Functions - 0865 mins
Trigonometric Functions - 0760 mins
Master Solving Problems of trigonometry45 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses