Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5
Banner 6
Banner 7
Banner 8
Banner 9

Q.

If the 4th  term in the expansion of 2+3x810 has the maximum numerical value, then the range of values of x for which this will be true is

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya

a

−6421

b

2164

c

−6421

d

−2164

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

Detailed Solution

T4 is numerically greatest term ⇒T4 T3>1,⇒T4 T5>1⇒T4 T3>1,T5 T4<1Now T4 T3=C3   10273x83C2   10283x82=x2,T5 T4=C4   10263x84C3   10273x83=21x64∴T4 T3>1⇒x2>1⇒|x|>2⇒x∈-∞,-2∪2,∞  →1and T5 T4<1⇒21x64<1⇒|x|<6421⇒x∈-6421,6421  →2By 1 and 2 we have x∈−6421,−2∪2,6421
Watch 3-min video & get full concept clarity

courses

No courses found

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon