267 Views

domain for sin inverse (2x√1-x^2) working rule


Abinaya 20th Aug, 2020
Answer (1)
Jainshahajal 10th Nov, 2020

Hello Aspirant,

I think there domain will be -1<x<1

Since value in sin-1 can only be between -1 and 1, we get the conditions

  1. -1 < x < 1
  2. -1/2 < x√1-x2 < 1/2

Taking case 2, square it. We get x2(1-x2) <1/4

Replace x2 with t. We get t2-t+1/4>0.

The lhs is a square , thus is greater than zero for all t . Therefore for all x .

The intersection of the two ranges gives -1<x<1

I hope this will help you.


Related Questions

Amity University-Noida B.Tech...
Apply
Among top 100 Universities Globally in the Times Higher Education (THE) Interdisciplinary Science Rankings 2026
Amrita University B.Tech 2026
Apply
Recognized as Institute of Eminence by Govt. of India | NAAC ‘A++’ Grade | Upto 75% Scholarships | Application Deadline: 15th Jan
Amity University-Noida BBA Ad...
Apply
Among top 100 Universities Globally in the Times Higher Education (THE) Interdisciplinary Science Rankings 2026
Amity University-Noida MBA Ad...
Apply
Ranked among top 10 B-Schools in India by multiple publications | Top Recruiters-Google, MicKinsey, Amazon, BCG & many more.
Amity University-Noida Law Ad...
Apply
Among top 100 Universities Globally in the Times Higher Education (THE) Interdisciplinary Science Rankings 2026
Amity University-Noida M.Tech...
Apply
Among top 100 Universities Globally in the Times Higher Education (THE) Interdisciplinary Science Rankings 2026
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books