Q.

Let f:0,1→R be a double differentiable function with f0=f1=0 and f"x+2f'x+fx≥0 ∀ x∈0,1 then

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

fx≤0  ∀  x∈0,1

b

if exfx assumes its minimum value in [0, 1] at x=12then fx+f'x<0  ∀x∈0,12

c

If gx=exfx then number of real solution of the equation  gggx=0 is 2

d

fx>0  ∀x∈0,1

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Given f(x)ex''=exf"x+2f'x+fx≥0,  So, f(x)ex is concave  and f0=0 and f1=0∴fx≤0 ∀x∈0,1 option 2:if fxex has minimum at x=12 then fxex'=exfx+f'x=0 at x=12   and fx+f'x <0 for x∈0,12  and  fx+f'x >0 for x∈12,1 option3: since f0=0 ⇒g0=e0f0=0 and gg0=0 ,ggg0=0similarly f1=0 ⇒ggg1=0
Watch 3-min video & get full concept clarity
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
Let f:0,1→R be a double differentiable function with f0=f1=0 and f"x+2f'x+fx≥0 ∀ x∈0,1 then