The number of 2 × 2 matrices A=a bc d or which a bc d−1=1/a1/b1/c1/d,(a,b,c,d∈R) 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

infinite

answer is A.

(Unlock A.I Detailed Solution for FREE)

Detailed Solution

If ad−bc≠0 thenA−1=1ad−bcd−b−caThus, dad−bc=1a⇔ad=ad−bc⇔bc=0⇔b=0 or c=0Therefore,a bc d−1=1/a 1/b1/c 1/dis never possible.

Watch 3-min video & get full concept clarity