Q.
Let x>−1, then statement P(n):(1+x)n>1+nx is true for
see full answer
Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!
Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya
a
all n∈N
b
all n>1
c
all n>1 provided x≠0
d
none of these
answer is C.
(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
For n=2,P(2):(1+x)2=1+2x+x2>1+2x,as x≠0.Assume thatP(k):(1+x)k>1+kx (1)for some k∈N,k>1As x>−1, multiplying both the sides of (1) by 1+x, we get(1+x)k+1>(1+kx)(1+x)=1+(k+1)x+kx2>1+(k+1)x ∵ kx2>0Thus, P(k+1) is true.By the principle of mathematical induction P(n) is true forall n>1 provided x≠0.
Watch 3-min video & get full concept clarity