Sequence and series
Why can't we apply Am-Gm here?
Nizam last edited by
@kalpita what is the answer
Answer is 26
Saumil Parsodkar last edited by
Where am I going wrong?? Pls help
Kds Dhanik samba last edited by
This post is deleted!
varsha last edited by
@kalpita solve it by doing differentiation the answer will be right!! By first differentiation we get x=0, sqrt(3/2) and by second differentiation we get x=0 for minimum and u get the answer
varsha last edited by varsha
@saumil-parsodkar we can't apply AM, GM and be sure that it will definitely be the minimum of the expression. We need to check if the equality condition is fulfilled ie A=B. HERE its. Not possible as we get cos^4x=18/8 which is not possible due to restricted range of cosx
ashish deo singh last edited by
you are right.